JIS G4105:1979 SCM440: Japanese standard chrome molybdenum alloy steel
| Grade | JIS G4105:1979 SCM440 |
| Standard | JIS G4105:1979 |
| Applications | Automotive parts, gears, shafts, bolts, dies |
| Most Active In | West (Maharashtra) |
| Grade | Standard | Match |
|---|---|---|
| IS 1570 (Part 4) 42Cr4Mo2 | IS 1570 (Part 4):1988 | Strong Match |
| BS 970 (Part 3) 708M40 | BS 970 (Part 3):1991 | Strong Match |
| SAE J404 4140 | SAE J404:2009 | Strong Match |
| SAE J404 4140 | SAE J404:2000 | Strong Match |
| BS 970 (Part 1) 708A40 | BS 970 (Part 1):1983 | Strong Match |
| JIS G4202 SACM645 | JIS G 4202:2005 | Strong Match |
| BS 970 (Part 1) 708M40 | BS 970 (Part 1):1991 | Strong Match |
| BS 970 (Part 3) 709M40 | BS 970 (Part 3):1991 | Close Alternative |
| C | Si | Mn | Cr | Mo | S | P |
|---|---|---|---|---|---|---|
| 0.38–0.43 | 0.15–0.35 | 0.60–0.90 | 0.90–1.20 | 0.15–0.30 | ≤0.030 | ≤0.030 |
| Tensile Strength | ≥930 MPa |
| Yield Strength | ≥785 MPa |
| Elongation | ≥12% |
| Hardness | 269–331 HB |
| Round Bar | 16mm–300mm dia |
| Flat Bar | 20×8mm–200×60mm |
| Hex Bar | 19mm–75mm A/F |
Popular forms for this grade:
Round Bar (3)No active JIS G4105:1979 SCM440 listings at this time.
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