Some standard content:
Machinery Industry Standard of the People's Republic of China
Large Low Alloy Steel Castings
Subject Content and Scope of Application
JB/T 6402--92
This standard recommends general large-scale Ordering, technical requirements, test methods, inspection rules, etc. for low alloy cast steel for steel castings. This standard applies to sand casting or castings poured in molds with thermal conductivity similar to sand molds. 2 Reference standards
GB223
Methods for chemical analysis of steel and alloys
GB228
Metal tensile test methods
GB229
Metal Charpy (U-notch) impact test method GB231
GB2106
Metal Brinell hardness test method
Metal Charpy (V-notch) impact test method GB11352
JB/ T6397
Casted carbon steel parts for general engineering use
Tai-type carbon structural steel forgings
JB/ZQ 4000.6
General technical conditions for repair welding of steel castings||tt ||JB/ZQ4000.7 General technical requirements for castings
3 Ordering requirements
The buyer should provide the supplier with drawings, casting grades and delivery status. Other technical requirements shall be determined by agreement between the two parties. 4Technical Requirements
4.1 Steelmaking
Unless otherwise specified, the steelmaking method shall be determined by the supplier. 4.2 Grade and chemical composition of cast steel
4.2.1 The chemical composition of steel shall comply with the provisions of Table 1. 4.2.2 Residual element content: Ni≤0.30%, Cr≤0.30%, Cu≤0.25%, Mo≤0.15%, V≤0.05%, total residual element content ≤1%. If the party has no requirement, the residual elements will not be used as the basis for acceptance. 4.3 Casting
Unless otherwise specified, the casting method shall be determined by the supplier. 4.4 Heat treatment
Castings should be heat treated. Unless otherwise specified, the supplier may perform heat treatment according to mechanical property requirements. Mechanical properties
4.5
4.5.1
The mechanical properties of cast steel should comply with the requirements in Table 2. 4.6 Surface quality
The surface roughness of the casting should comply with the requirements of the drawing or order agreement, and generally reaches R.100μm. 4.6.1
4.6.2 The surface of the casting should not have defects that would affect its use. If there are defects, repair welding is allowed. Approved by the Ministry of Mechanical and Electronic Industry of the People's Republic of China on 1992-07-14 176
Implemented on 1993-07-01
4.7 Dimensional tolerances and machining allowances
JB/T 6402—92|| tt||The dimensional tolerance and machining allowance of castings shall comply with the provisions of the drawing or ordering agreement. If there is no provision in the drawing or ordering agreement, the machining allowance and dimensional tolerance of castings shall comply with the provisions of JB/ZQ4000.7. 4.8 Repair welding
The supplier may perform repair welding on casting defects in accordance with the provisions of JB/ZQ4000.6. 4.9 Correction
The deformation caused by castings can be eliminated by correction. Correction is usually performed at room temperature, and thermal correction can be used in special cases. 5 Test methods and inspection rules
5.1 Chemical composition analysis
5.1.1 Test furnace by furnace according to the melting furnace. Test blocks for chemical analysis should be prepared during the pouring process. 5.1.2 The analysis method shall be in accordance with the provisions of GB223. 5.2 Mechanical property test
5.2.1 The test block for mechanical properties shall be poured separately with molten steel from the same casting as specified in GB11352. 5.2.2 The test blocks and castings are heat treated in the same furnace. Take one tensile specimen and three impact specimens from the same smelting heat and heat treatment heat. 5.3 The tensile test shall be in accordance with the provisions of GB228; the impact test shall be in accordance with the provisions of GB2106, GB229 or in accordance with the provisions of Appendix A in JB/T6397; hardness The test is in accordance with the provisions of GB231.
6 Retesting and reheat treatment
6.1 Retesting is allowed when the mechanical property test results (items specified in the supply contract) do not meet the requirements of this standard. Double test samples should be taken, and the retest results should all meet the requirements of this standard. 6.2 When any retest test fails, the test block and casting shall be re-heated and re-sampled for testing. Two re-heat treatments are allowed. There is no limit to the number of times of tempering.
Quality certificate, logo
7
7.1 The quality certificate should include the following: order contract number, drawing number, casting name, steel number, heat number a.||tt ||Heat treatment status:
b.
Chemical composition, mechanical properties,
c.
Signed and stamped by the official seal of the person in charge of the supplier’s quality inspection department. .d.
7.2 Castings should be marked as follows:
a. Order number, drawing number, name, serial number, furnace number; b. Supplier's factory name.
Table 1
Brand
No.
ZG30Mn
ZG40Mn
ZG40Mn2
ZG50Mn2
ZG20Mn| |tt||(ZG20SiMn)
c
Si
Chemical compounds
Mn
P
s
10. 27 ~ 0. 34 0. 30~ 0. 50 1. 20~1. 500. 0350.35~0.450.300.451.20~1.50≤0.0350. 350. 450. 20~0. 40|1. 60~0.45~ 0.55
50.20~0.
Et
0. 120, 220. 60~0. 80
1.00.
1.80
40.035
0.035
1.300.035
CH
Ni
0.40
Mo
%
Cu
177
Brand
No.
ZG35Mn
(ZG35SiMn)
ZG35SiMnMo
ZG35CrMnSi
ZG20MnMo
ZG55CrMnMo
(ZG5CrMnMo)
ZG40Cr1
(ZG40Cr)
ZG34Cr2Ni2Mo
(ZG34CrNiMo)
ZG20CrMo| |tt||ZG35Cr1Mo
(ZG35CrMo))
ZG42Cr1Mo
(ZG42CrMo))
ZG50CriMo
(ZG50CrMo)
ZG65Mn| |tt||ZG28NiCrMo
ZG30NiCrMo
ZG35NiCrMo
C
Si
JB/T 6402-92
Continued Table 1|| tt||Mn
P
s
0. 30~ 0. 400. 60~0. 80|1. 10~1. 40≤0. 0350.32~0.401.10 ~1. 401.10~1. 400.035Cr
[0. 30~0. 40|0. 50~0. 750. 90~1. 20≤0. 03510. 50~0. 8010.17~0. 230 . 200. 40|1.10~1. 400. 0350. 50~0. 600. 25~-0. 60|1
60≤0.0350.600.90
0. 35~0. 450. 20~0. 40 0. 50~0. 80≤0. 035 |0. 80~1. 10Ni
Mo
%
Cu
0.20~0.300 .30
0.30
0.20--0.35
0.20~~0.30
0.30
0. 30 ~ 0. 37|0. 30~0 . 60 |0. 60~1. 00≤0. 035 1. 40~1. 70| 1. 40~ 1. 70|0. 15 ~0. 350. 17~0. 250. 20~0. 450.46 ~0. 540. 25~0. 500. 50~0. 800. 0350. 90~1. 200. 60~0. 70[0. 17~0.370. 90~1.20≤0. 0350.40~~0.60||tt ||0.200.30
0. 20 ~0. 30
0. 15 ~0. 25
0. 25~0. 30|0. 30~0. 80| 0. 60~ 0. 90≤0. 0350. 35 ~0. 85 0. 40~ 0. 80 0. 35~ 0. 5510. 25 ~0. 350. 30~0. 600. 70~1. 00≤ 0. 0350. 60~0. 90|0. 60~1. 000. 35~0. 500. 30~ 0. 37 0. 60-~ 0. 90
0.70~~1.00≤0.0350.40 ~0.900.60~~0.900.40~0.50 Note: The grades in brackets are traditional grades.
Brand
No.
ZG30Mn
ZG40Mn
Z640Mn2
ZG50Mn2
ZG20Mn
178|| tt||Heat treatment status
Normalizing and ten tempering!
Normalizing and ten tempering
Normalizing + tempering
Tempering
Normalizing and ten tempering
Normalizing and ten tempering||tt ||Tempering
e
MPa
300
295
395
685
445||tt| |295
300
a
MPa
558
640
590
835
Mechanics Performance
Table 2
%%
18
12
30
30
2055
13
785
510
500-~650
18
14
24
Aku |Ak AkDyM| |tt||HB
163
163
179
135
45
37
30||tt ||39
15
35269302
156
150~190
Prepare
Note
Used to withstand friction Parts that are shot and impacted
, such as gears, etc.
Used to withstand friction
parts, such as gears, etc.
Used for high-strength parts, such as || tt||Gears, gear rims, etc.
Good welding and fluidity,
Made into hydraulic cylinders, blades, nozzles
Nozzle bodies, valves, elbows, etc.
Brand| |tt||No.
ZG35Mn
ZG36SiMnMo
ZG35CrMnSi
ZG20MnMo
ZG55CrMnMo
ZG40C1
ZG34Cr2Ni2Mo||tt ||ZG20CMo
ZG34Cr1Mo
ZG42Cr1Mo
ZG50Cr1Mo
ZG65Mn
ZG28NiCrMo
ZG30NiCrMo
ZG35NiCIMo
Additional notes:
Heat treatment status
Normalizing and tempering
Quenching and tempering
Normalizing + tempering
Quenching and tempering
Positive Fire Ten Tempering
Normalizing+Tempering
Normalizing
Tempering
Normalizing+Tempering
Adjusting
Quality
Conditioning
Conditioning
Quality
Conditioning
Conditioning
Normal Fire Ten Kingdoms Destroyed
s| |tt||MPa
345
415
395
490
345
295
Not specified|| tt||345
700
245
510
490
520
JB/T 6402—92
Continued table 2
2
MPa
570
640
640
690
690
490
Not specified
630
%
12
12
12
12
14
16
%
20
25
20
25
30
1826|| tt||1950~100012
460
740~880
690~830
740~880
Not specified
420| |tt||590
660
Not specified
630
730
830
HKu
24|| tt||27
24
27
39
183024
12
11
11||tt| |20
17
14
40
35
Hk
AkDvM
J
27
27
32
27
21
HB
217
156
212|| tt||240~290
200~~250
pieces
pieces
preparation
note
for withstanding zero| | tt | Such as pumps
chargers, etc.
has a certain red hardness and is used
parts, such as bevel gears, pinions,
crane traveling wheels, shafts, etc.
used for gears, bevel gears and
high-pressure cylinder parts, etc. ||tt| |Used for gears, electric furnace supports
wheel sleeves, ring gears, etc.
for high-load parts, teeth
wheels, male gears, etc.
34||tt| |200~260
This standard is proposed and managed by the Deyang Large Casting and Forging Research Institute of the Ministry of Mechanical and Electronics Industry. This standard is drafted by the Deyang Large Casting and Forging Research Institute of the Ministry of Mechanical and Electronic Industry. The main drafter of this standard is Ke Binghua.
Used for reducer parts, teeth
wheels, pinions, etc.
Used for ball mill plate, etc.
Suitable for gears with a diameter greater than
300mm Castings
Suitable for gear castings with a diameter larger than
300mm
Suitable for gear castings with a diameter larger than
300mm
17!
00≤0.0350.80~1.200. 46~0. 540. 25~0. 500. 50~0. 800. 0350. 90~1. 200. 60~0. 70[0. 17~0.370. 90~1.20≤ 0. 0350.40~~0.60
0.200.30
0. 20 ~0. 30
0. 15 ~0. 25
0. 25~0. 30 |0. 30~0. 80|0. 60~ 0. 90≤0. 0350. 35 ~0. 85 0. 40~ 0. 80 0. 35~ 0. 5510. 25 ~0. 350. 30~0 . 600. 70~1. 00≤0. 0350. 60~0. 90|0. 60~1. 000. 35~0. 500. 30~ 0. 37 0. 60-~ 0. 90||tt| |0.70~~1.00≤0.0350.40~0.900.60~~0.900.40~0.50 Note: The grades in brackets are traditional grades.
Brand
No.
ZG30Mn
ZG40Mn
Z640Mn2
ZG50Mn2
ZG20Mn
178|| tt||Heat treatment status
Normalizing and ten tempering!
Normalizing and ten tempering
Normalizing + tempering
Tempering
Normalizing and ten tempering
Normalizing and ten tempering||tt ||Tempering
e
MPa
300
295
395
685
445||tt| |295
300
a
MPa
558
640
590
835
Mechanics Performance
Table 2
%%
18
12
30
30
2055
13
785
510
500-~650
18
14
24
Aku |Ak AkDyM| |tt||HB
163
163
179
135
45
37
30||tt ||39
15
35269302
156
150~190
Prepare
Note
Used to withstand friction Parts that are photographed and impacted
, such as gears, etc.
Used to withstand friction
parts, such as gears, etc.
Used for high-strength parts, such as || tt||Gears, gear rims, etc.
Good welding and fluidity,
Made into hydraulic cylinders, blades, nozzles
Nozzle bodies, valves, elbows, etc.
Brand| |tt||No.
ZG35Mn
ZG36SiMnMo
ZG35CrMnSi
ZG20MnMo
ZG55CrMnMo
ZG40C1
ZG34Cr2Ni2Mo||tt ||ZG20CMo
ZG34Cr1Mo
ZG42Cr1Mo
ZG50Cr1Mo
ZG65Mn
ZG28NiCrMo
ZG30NiCrMo
ZG35NiCIMo
Additional notes:
Heat treatment status
Normalizing and tempering
Quenching and tempering
Normalizing + tempering
Quenching and tempering
Positive Fire Ten Tempering
Normalizing+Tempering
Normalizing
Tempering
Normalizing+Tempering
Adjusting
Quality
Conditioning
Conditioning
Quality
Conditioning
Conditioning
Normal Fire Ten Kingdoms Destroyed
s| |tt||MPa
345
415
395
490
345
295
Not specified|| tt||345
700
245
510
490
520
JB/T 6402—92
Continued table 2
2
MPa
570
640
640
690
690
490
Not specified
630
%
12
12
12
12
14
16
%
20
25
20
25
30
1826|| tt||1950~100012
460
740~880
690~830
740~880
Not specified
420| |tt||590
660
Not specified
630
730
830
HKu
24|| tt||27
24
27
39
183024
12
11
11||tt| |20
17
14
40
35
Hk
AkDvM
J
27
27
32
27
21
HB
217
156
212|| tt||240~290
200~~250
pieces
pieces
preparation
note
for withstanding zero| | tt | Such as pumps
chargers, etc.
has a certain red hardness and is used
parts, such as bevel gears, pinions,
crane traveling wheels, shafts, etc.
used for gears, bevel gears and
high-pressure cylinder parts, etc. ||tt| |Used for gears, electric furnace supports
wheel sleeves, ring gears, etc.
for high-load parts, teeth
wheels, male gears, etc.
34||tt| |200~260
This standard is proposed and managed by the Deyang Large Casting and Forging Research Institute of the Ministry of Mechanical and Electronics Industry. This standard is drafted by the Deyang Large Casting and Forging Research Institute of the Ministry of Mechanical and Electronic Industry. The main drafter of this standard is Ke Binghua.
Used for reducer parts, teeth
wheels, pinions, etc.
Used for ball mill plate, etc.
Suitable for gears with a diameter greater than
300mm Castings
Suitable for gear castings with a diameter larger than
300mm
Suitable for gear castings with a diameter larger than
300mm
17!
00≤0.0350.80~1.200. 46~0. 540. 25~0. 500. 50~0. 800. 0350. 90~1. 200. 60~0. 70[0. 17~0.370. 90~1.20≤ 0. 0350.40~~0.60
0.200.30
0. 20 ~0. 30
0. 15 ~0. 25
0. 25~0. 30 |0. 30~0. 80|0. 60~ 0. 90≤0. 0350. 35 ~0. 85 0. 40~ 0. 80 0. 35~ 0. 5510. 25 ~0. 350. 30~0 . 600. 70~1. 00≤0. 0350. 60~0. 90|0. 60~1. 000. 35~0. 500. 30~ 0. 37 0. 60-~ 0. 90||tt| |0.70~~1.00≤0.0350.40~0.900.60~~0.900.40~0.50 Note: The grades in brackets are traditional grades.
Brand
No.
ZG30Mn
ZG40Mn
Z640Mn2
ZG50Mn2
ZG20Mn
178|| tt||Heat treatment status
Normalizing and ten tempering!
Normalizing and ten tempering
Normalizing + tempering
Tempering
Normalizing and ten tempering
Normalizing and ten tempering||tt ||Tempering
e
MPa
300
295
395
685
445||tt| |295
300
a
MPa
558
640
590
835
Mechanics Performance
Table 2
%%
18
12
30
30
2055
13
785
510
500-~650
18
14
24
Aku |Ak AkDyM| |tt||HB
163
163
179
135
45
37
30||tt ||39
15
35269302
156
150~190
Prepare
Note
Used to withstand friction Parts that are photographed and impacted
, such as gears, etc.
Used to withstand friction
parts, such as gears, etc.
Used for high-strength parts, such as || tt||Gears, gear rims, etc.
Good welding and fluidity,
Made into hydraulic cylinders, blades, nozzles
Nozzle bodies, valves, elbows, etc.
Brand| |tt||No.
ZG35Mn
ZG36SiMnMo
ZG35CrMnSi
ZG20MnMo
ZG55CrMnMo
ZG40C1
ZG34Cr2Ni2Mo||tt ||ZG20CMo
ZG34Cr1Mo
ZG42Cr1Mo
ZG50Cr1Mo
ZG65Mn
ZG28NiCrMo
ZG30NiCrMo
ZG35NiCIMo
Additional notes:
Heat treatment status
Normalizing and tempering
Quenching and tempering
Normalizing + tempering
Quenching and tempering
Positive Fire Ten Tempering
Normalizing+Tempering
Normalizing
Tempering
Normalizing+Tempering
Adjusting
Quality
Conditioning
Conditioning
Quality
Conditioning
Conditioning
Normal Fire Ten Kingdoms Destroyed
s| |tt||MPa
345
415
395
490
345
295
Not specified|| tt||345
700
245
510
490
520
JB/T 6402—92
Continued table 2
2
MPa
570
640
640
690
690
490
Not specified
630
%
12
12
12
12
14
16
%
20
25
20
25
30
1826|| tt||1950~100012
460
740~880
690~830
740~880
Not specified
420| |tt||590
660
Not specified
630
730
830
HKu
24|| tt||27
24
27
39
183024
12
11
11||tt| |20
17
14
40
35
Hk
AkDvM
J
27
27
32
27
21
HB
217
156
212|| tt||240~290
200~~250
pieces
pieces
preparation
note
for withstanding zero| | tt | Such as pumps
chargers, etc.
has a certain red hardness and is used
parts, such as bevel gears, pinions,
crane traveling wheels, shafts, etc.
used for gears, bevel gears and
high-pressure cylinder parts, etc. ||tt| |Used for gears, electric furnace supports
wheel sleeves, ring gears, etc.
for high-load parts, teeth
wheels, male gears, etc.
34||tt| |200~260
This standard is proposed and managed by the Deyang Large Casting and Forging Research Institute of the Ministry of Mechanical and Electronics Industry. This standard is drafted by the Deyang Large Casting and Forging Research Institute of the Ministry of Mechanical and Electronic Industry. The main drafter of this standard is Ke Binghua.
Used for reducer parts, teeth
wheels, pinions, etc.
Used for ball mill plate, etc.Www.bzxZ.net
Suitable for gears with a diameter greater than
300mm Castings
Suitable for gear castings with a diameter larger than
300mm
Suitable for gear castings with a diameter larger than
300mm
17!
80|0. 60~ 0. 90≤0. 0350. 35 ~0. 85 0. 40~ 0. 80 0. 35~ 0. 5510. 25 ~0. 350. 30~0. 600. 70~1. 00≤0. 0350. 60~0. 90|0. 60~1. 000. 35~0. 500. 30~ 0. 37 0. 60-~ 0. 90
0.70~~1.00≤0.0350 .40~0.900.60~~0.900.40~0.50 Note: The grades in brackets are traditional grades.
Brand
No.
ZG30Mn
ZG40Mn
Z640Mn2
ZG50Mn2
ZG20Mn
178|| tt||Heat treatment status
Normalizing and ten tempering!
Normalizing and ten tempering
Normalizing + tempering
Tempering
Normalizing and ten tempering
Normalizing and ten tempering||tt ||Tempering
e
MPa
300
295
395
685
445||tt| |295
300
a
MPa
558
640
590
835
Mechanics Performance
Table 2
%%
18
12
30
30
2055
13
785
510
500-~650
18
14
24
Aku |Ak AkDyM| |tt||HB
163
163
179
135
45
37
30||tt ||39
15
35269302
156
150~190
Prepare
Note
Used to withstand friction Parts that are shot and impacted
, such as gears, etc.
Used to withstand friction
parts, such as gears, etc.
Used for high-strength parts, such as || tt||Gears, gear rims, etc.
Good welding and fluidity,
Made into hydraulic cylinders, blades, nozzles
Nozzle bodies, valves, elbows, etc.
Brand| |tt||No.
ZG35Mn
ZG36SiMnMo
ZG35CrMnSi
ZG20MnMo
ZG55CrMnMo
ZG40C1
ZG34Cr2Ni2Mo||tt ||ZG20CMo
ZG34Cr1Mo
ZG42Cr1Mo
ZG50Cr1Mo
ZG65Mn
ZG28NiCrMo
ZG30NiCrMo
ZG35NiCIMo
Additional notes:
Heat treatment status
Normalizing and tempering
Quenching and tempering
Normalizing + tempering
Quenching and tempering
Positive Fire Ten Tempering
Normalizing+Tempering
Normalizing
Tempering
Normalizing+Tempering
Adjusting
Quality
Conditioning
Conditioning
Quality
Conditioning
Conditioning
Normal Fire Ten Kingdoms Destroyed
s| |tt||MPa
345
415
395
490
345
295
Not specified|| tt||345
700
245
510
490
520
JB/T 6402—92
Continued table 2
2
MPa
570
640
640
690
690
490
Not specified
630
%
12
12
12
12
14
16
%
20
25
20
25
30
1826|| tt||1950~100012
460
740~880
690~830
740~880
Not specified
420| |tt||590
660
Not specified
630
730
830
HKu
24|| tt||27
24
27
39
183024
12
11
11||tt| |20
17
14
40
35
Hk
AkDvM
J
27
27
32
27
21
HB
217
156
212|| tt||240~290
200~~250
pieces
pieces
preparation
note
for withstanding zero| | tt | Such as pumps
chargers, etc.
has a certain red hardness and is used
parts, such as bevel gears, pinions,
crane traveling wheels, shafts, etc.
used for gears, bevel gears and
high-pressure cylinder parts, etc. ||tt| |Used for gears, electric furnace supports
wheel sleeves, ring gears, etc.
for high-load parts, teeth
wheels, male gears, etc.
34||tt| |200~260
This standard is proposed and managed by the Deyang Large Casting and Forging Research Institute of the Ministry of Mechanical and Electronics Industry. This standard is drafted by the Deyang Large Casting and Forging Research Institute of the Ministry of Mechanical and Electronic Industry. The main drafter of this standard is Ke Binghua.
Used for reducer parts, teeth
wheels, pinions, etc.
Used for ball mill plate, etc.
Suitable for gears with a diameter greater than
300mm Castings
Suitable for gear castings with a diameter larger than
300mm
Suitable for gear castings with a diameter larger than
300mm
17!
80|0. 60~ 0. 90≤0. 0350. 35 ~0. 85 0. 40~ 0. 80 0. 35~ 0. 5510. 25 ~0. 350. 30~0. 600. 70~1. 00≤0. 0350. 60~0. 90|0. 60~1. 000. 35~0. 500. 30~ 0. 37 0. 60-~ 0. 90
0.70~~1.00≤0.0350 .40~0.900.60~~0.900.40~0.50 Note: The grades in brackets are traditional grades.
Brand
No.
ZG30Mn
ZG40Mn
Z640Mn2
ZG50Mn2
ZG20Mn
178|| tt||Heat treatment status
Normalizing and ten tempering!
Normalizing and ten tempering
Normalizing + tempering
Tempering
Normalizing and ten tempering
Normalizing and ten tempering||tt ||Tempering
e
MPa
300
295
395
685
445||tt| |295
300
a
MPa
558
640
590
835
Mechanics Performance
Table 2
%%
18
12
30
30
2055
13
785
510
500-~650
18
14
24
Aku |Ak AkDyM| |tt||HB
163
163
179
135
45
37
30||tt ||39
15
35269302
156
150~190
Prepare
Note
Used to withstand friction Parts that are shot and impacted
, such as gears, etc.
Used to withstand friction
parts, such as gears, etc.
Used for high-strength parts, such as || tt||Gears, gear rims, etc.
Good welding and fluidity,
Made into hydraulic cylinders, blades, nozzles
Nozzle bodies, valves, elbows, etc.
Brand| |tt||No.
ZG35Mn
ZG36SiMnMo
ZG35CrMnSi
ZG20MnMo
ZG55CrMnMo
ZG40C1
ZG34Cr2Ni2Mo||tt ||ZG20CMo
ZG34Cr1Mo
ZG42Cr1Mo
ZG50Cr1Mo
ZG65Mn
ZG28NiCrMo
ZG30NiCrMo
ZG35NiCIMo
Additional notes:
Heat treatment status
Normalizing and tempering
Quenching and tempering
Normalizing + tempering
Quenching and tempering
Positive Fire Ten Tempering
Normalizing+Tempering
Normalizing
Tempering
Normalizing+Tempering
Adjusting
Quality
Conditioning
Conditioning
Quality
Conditioning
Conditioning
Normal Fire Ten Kingdoms Destroyed
s| |tt||MPa
345
415
395
490
345
295
Not specified|| tt||345
700
245
510
490
520
JB/T 6402—92
Continued table 2
2
MPa
570
640
640
690
690
490
Not specified
630
%
12
12
12
12
14
16
%
20
25
20
25
30
1826|| tt||1950~100012
460
740~880
690~830
740~880
Not specified
420| |tt||590
660
Not specified
630
730
830
HKu
24|| tt||27
24
27
39
183024
12
11
11||tt| |20
17
14
40
35
Hk
AkDvM
J
27
27
32
27
21
HB
217
156
212|| tt||240~290
200~~250
pieces
pieces
preparation
note
for withstanding zero| | tt | Such as pumps
chargers, etc.
has certain red hardness and is used
for forging dies, etc.
for high-strength gears
parts, such as bevel gears, pinions,
crane traveling wheels, shafts, etc.
used for gears, bevel gears and
high-pressure cylinder parts, etc. ||tt| |Used for gears, electric furnace supports
wheel sleeves, ring gears, etc.
for high-load parts, teeth
wheels, male gears, etc.
34||tt| |200~260
This standard is proposed and managed by the Deyang Large Casting and Forging Research Institute of the Ministry of Mechanical and Electronics Industry. This standard is drafted by the Deyang Large Casting and Forging Research Institute of the Ministry of Mechanical and Electronic Industry. The main drafter of this standard is Ke Binghua.
Used for reducer parts, teeth
wheels, pinions, etc.
Used for ball mill plate, etc.
Suitable for gears with a diameter greater than
300mm Castings
Suitable for gear castings with a diameter larger than
300mm
Suitable for gear castings with a diameter larger than
300mm
17!
50Note: The grades in brackets are traditional grades.
Brand
No.
ZG30Mn
ZG40Mn
Z640Mn2
ZG50Mn2
ZG20Mn
178|| tt||Heat treatment status
Normalizing and ten tempering!
Normalizing and ten tempering
Normalizing + tempering
Tempering
Normalizing and ten tempering
Normalizing and ten tempering||tt ||Tempering
e
MPa
300
295
395
685
445||tt| |295
300
a
MPa
558
640
590
835
Mechanics Performance
Table 2
%%
18
12
30
30
2055
13
785
510
500-~650
18
14
24
Aku |Ak AkDyM| |tt||HB
163
163
179
135
45
37
30||tt ||39
15
35269302
156
150~190
Prepare
Note
Used to withstand friction Parts that are shot and impacted
, such as gears, etc.
Used to withstand friction
parts, such as gears, etc.
Used for high-strength parts, such as || tt||Gears, gear rims, etc.
Good welding and fluidity,
Made into hydraulic cylinders, blades, nozzles
Nozzle bodies, valves, elbows, etc.
Brand| |tt||No.
ZG35Mn
ZG36SiMnMo
ZG35CrMnSi
ZG20MnMo
ZG55CrMnMo
ZG40C1
ZG34Cr2Ni2Mo||tt ||ZG20CMo
ZG34Cr1Mo
ZG42Cr1Mo
ZG50Cr1Mo
ZG65Mn
ZG28NiCrMo
ZG30NiCrMo
ZG35NiCIMo
Additional notes:
Heat treatment status
Normalizing and tempering
Quenching and tempering
Normalizing + tempering
Quenching and tempering
Positive Fire Ten Tempering
Normalizing+Tempering
Normalizing
Tempering
Normalizing+Tempering
Adjusting
Quality
Conditioning
Conditioning
Quality
Conditioning
Conditioning
Normal Fire Ten Kingdoms Destroyed
s| |tt||MPa
345
415
395
490
345
295
Not specified|| tt||345
700
245
510
490
520
JB/T 6402—92
Continued table 2
2
MPa
570
640
640
690
690
490
Not specified
630
%
12
12
12
12
14
16
%
20
25
20
25
30
1826|| tt||1950~100012
460
740~880
690~830
740~880
Not specified
420| |tt||590
660
Not specified
630
730
830
HKu
24|| tt||27
24
27
39
183024
12
11
11||tt| |20
17
14
40
35
Hk
AkDvM
J
27
27
32
27
21
HB
217
156
212|| tt||240~290
200~~250
pieces
pieces
preparation
note
for withstanding zero| | tt | Such as pumps
chargers, etc.
has a certain red hardness and is used
parts, such as bevel gears, pinions,
crane traveling wheels, shafts, etc.
used for gears, bevel gears and
high-pressure cylinder parts, etc. ||tt| |Used for gears, electric furnace supports
wheel sleeves, ring gears, etc.
for high-load parts, teeth
wheels, male gears, etc.
34||tt| |200~260
This standard is proposed and managed by the Deyang Large Casting and Forging Research Institute of the Ministry of Mechanical and Electronics Industry. This standard is drafted by the Deyang Large Casting and Forging Research Institute of the Ministry of Mechanical and Electronic Industry. The main drafter of this standard is Ke Binghua.
Used for reducer parts, teeth
wheels, pinions, etc.
Used for ball mill plate, etc.
Suitable for gears with a diameter greater than
300mm Castings
Suitable for gear castings with a diameter larger than
300mm
Suitable for gear castings with a diameter larger than
300mm
17!
50Note: The grades in brackets are traditional grades.
Brand
No.
ZG30Mn
ZG40Mn
Z640Mn2
ZG50Mn2
ZG20Mn
178|| tt||Heat treatment status
Normalizing and ten tempering!
Normalizing and ten tempering
Normalizing + tempering
Tempering
Normalizing and ten tempering
Normalizing and ten tempering||tt ||Tempering
e
MPa
300
295
395
685
445||tt| |295
300
a
MPa
558
640
590
835
Mechanics Performance
Table 2
%%
18
12
30
30
2055
13
785
510
500-~650
18
14
24
Aku |Ak AkDyM| |tt||HB
163
163
179
135
45
37
30||tt ||39
15
35269302
156
150~190
Prepare
Note
Used to withstand friction Parts that are shot and impacted
, such as gears, etc.
Used to withstand friction
parts, such as gears, etc.
Used for high-strength parts, such as || tt||Gears, gear rims, etc.
Good welding and fluidity,
Made into hydraulic cylinders, blades, nozzles
Nozzle bodies, valves, elbows, etc.
Brand| |tt||No.
ZG35Mn
ZG36SiMnMo
ZG35CrMnSi
ZG20MnMo
ZG55CrMnMo
ZG40C1
ZG34Cr2Ni2Mo||tt ||ZG20CMo
ZG34Cr1Mo
ZG42Cr1Mo
ZG50Cr1Mo
ZG65Mn
ZG28NiCrMo
ZG30NiCrMo
ZG35NiCIMo
Additional notes:
Heat treatment status
Normalizing and tempering
Quenching and tempering
Normalizing + tempering
Quenching and tempering
Positive Fire Ten Tempering
Normalizing+Tempering
Normalizing
Tempering
Normalizing+Tempering
Adjusting
Quality
Conditioning
Conditioning
Quality
Conditioning
Conditioning
Normal Fire Ten Kingdoms Destroyed
s| |tt||MPa
345
415
395
490
345
295
Not specified|| tt||345
700
245
510
490
520
JB/T 6402—92
Continued table 2
2
MPa
570
640
640
690
690
490
Not specified
630
%
12
12
12
12
14
16
%
20
25
20
25
30
1826|| tt||1950~100012
460
740~880
690~830
740~880
Not specified
420| |tt||590
660
Not specified
630
730
830
HKu
24|| tt||27
24
27
39
183024
12
11
11||tt| |20
17
14
40
35
Hk
AkDvM
J
27
27
32
27
21
HB
217
156
212|| tt||240~290
200~~250
pieces
pieces
preparation
note
for withstanding zero| | tt | Such as pumps
chargers, etc.
has a certain red hardness and is used
parts, such as bevel gears, pinions,
crane traveling wheels, shafts, etc.
used for gears, bevel gears and
high-pressure cylinder parts, etc. ||tt| |Used for gears, electric furnace supports
wheel sleeves, ring gears, etc.
for high-load parts, teeth
wheels, male gears, etc.
34||tt| |200~260
This standard is proposed and managed by the Deyang Large Casting and Forging Research Institute of the Ministry of Mechanical and Electronics Industry. This standard is drafted by the Deyang Large Casting and Forging Research Institute of the Ministry of Mechanical and Electronic Industry. The main drafter of this standard is Ke Binghua.
Used for reducer parts, teeth
wheels, pinions, etc.
Used for ball mill plate, etc.
Suitable for gears with a diameter greater than
300mm Castings
Suitable for gear castings with a diameter larger than
300mm
Suitable for gear castings with a diameter larger than
300mm
17!
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