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4140, 42CrMo4, Scm440 ,En19, forged Steel Round Bar
AISI 4140 Alloy Steel Used for big gear, supercharger drive gear, rear axle, the load of connecting rod and a spring clip, can also be used to under 2000m deep well of oil drill pipe joint and the fishing tool and so on.
4140 steel Chemical composition:
| C | Si | Mn | P | S | Cr | Ni | Mo | Cu | AI | V |
| 0.42/0.50 |
0.17/0.37 |
0.50/0.80 |
≤0.035 |
≤0.035 |
0.9/1.2 |
≤0.2 |
0.15/0.25 |
≤0.3 |
0.02/0.5 |
≤0.05 |
| Equivalent Grades: | SAE | 4140 | JIS | SCM440 |
| Greman W.Stoff No. | 1.7225 | GB | 40CrMo | |
| BS | 708M40 | DIN | 42CrMo4 |
SPECIFICATION OF ALLOY STEEL AISI 4140 ROUND BARS
|
Diameter: |
130mm-1000mm (optional) |
|
Length: |
1000mm-12000mm Straightness: 3mm/M max(optional) |
|
Process: |
Forged from vacuum degassed ingots. |
|
Delivery condition: |
Hot forged Rough machined (black surface after Q/T) Turned (optional) |
|
Delivery Time: |
30-60days |
|
Heat treatment: |
Normalized / Annealed / Quenched / tempered (optional) |
|
Technical Data: |
According to the customer's requirement of Chemical Composition, Physical Properties and Mechanical Testing |
|
Properties: |
As your request |
|
Test: |
Ultrasonic test according to SEP 1921-84 Class C/c and D/d (optional) |
|
Marking: |
Grade, heat NO. length will be stamped one each bar with required color |
|
Payment: |
30% advance by T\T, Balance pay before the shipment against shipping documents or irrevocable LC at sight |
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