Loading Port:Tianjin
Payment Terms:TT OR LC
Min Order Qty:25 m.t.
Supply Capability:50000 m.t./month
Special Steel Scm440 Aisi 4140 Steel CNBM
Product Description:
1.Dia: 10mm-300mm
2.Length: 3000mm-12000mm
3.Process: EAF + LF + VD + Forged + Heat Treatment (optional)
4.Delivery condition: Hot forged +Rough machined (black surface after Q/T)+ Turned (optional)
5.Forged ratio: no less than 3:1
6.Technical Data: According to the customer's requirement of Chemical Composition, Physical Properties and Mechanical Testing
7.Test: ultrasonic test according to SEP 1921-84 3C/c
8.Material details will be as per agreed technical specifications
9.Certificate of Quality: issued in English, in addition the normal terms
Chemical Composition:
GB | AISI | JIS | DIN | C | Si | Mn | Cr | Mo |
27SiMn | - | - | - | 0.24-0.32 | 1.10-1.40 | 1.10-1.40 | 0.3 | 0.10-0.15 |
40Cr | 5140 | SCM440 | 41Cr4 | 0.37-0.44 | 0.17-0.37 | 0.50-0.80 | 0.80-1.10 | 0.10-0.15 |
35CrMo | 4135 | SCM435 | 34CrMo4 | 0.32-0.40 | 0.17-0.37 | 0.40-0.70 | 0.80-1.10 | 0.15-0.25 |
42CrMo | 4140 4142 | SCM440 | 42CrMo4 | 0.38-0.45 | 0.17-0.37 | 0.50-0.80 | 0.90-1.20 | 0.15-0.25 |
Application:
scm440 hot rolled round bars and forged round bars used in the manufacture of requirements higher than
35 crmo steel strength and conditioning section larger forgings, such as locomotive traction with the big gear,
supercharger drive gear, pressure vessel gear.
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