High Tensile Steel 4140QT SCM440 |1.7225
High Tensile Steel 4140QT SCM440 |1.7225
1.7225/42CRMO4
Annealed steel
Standard: PN/EN 10083-3
Applications:
Steel is susceptible to heavy duty axles, shafts and crankshafts. It is also affected by variable bending and torsional loads, gears, etc.
Technical Information:
After soft annealing, the steel becomes machinable (by improving shear) and adjusts for mechanical cutting.
Chemical Analysis (%):
| C | Mn | Si | Cr | Ni | Mo | P | S |
| 0.38-0.45 | 0.60-0.90 | 0.15-0.40 | - | 0.90-1.20 | - | - | - |
Machanical Properties:
| Tensile str. (N/mm2) | Yield point (N/mm2) | Elongation (%) | Contraction (%) | Impack work (J/cm2) | Hardness (HB) |
| 1080 | 930 | 12 | 45 | 63 |
217
|
Hot work and Heat treatment temperatures:
| Forging | Normalization | Subcritical annealing | Isothermal annealing | Hardening | Tempering |
| 1100~900 | 860~880 | 680~720 | 830~900 670x3h |
830~860 oil | 550~650 |
Comparable Standards:
| AISI/SAE | DIN | W.Nr. | AFNOR | JIS | BS | SIAU | GB,YB |
| 4140 | 42CrMo4 | 1.7225 | 42CD4 | SCM440 | 708A42 | UM8 | 42CrM. |
Product Description
Product Application
Product Packaging
20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High)
40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High)
40ft HC:12032mm(Length)x2352mm(Width)x2698mm(High)
Packing Details : Bundle with steel strip or Precision packaging
Standard Export Seaworthy Package.Suit for all kinds of transport,or as required
Port：Qingdao port ,Tianjin port , Shanghai port
Lead time : quantity (tons) 1-25 7days
﹥25 to be negotiated
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