JIS G4103 SNCM439 Steel — Specifications & Listings
JIS G4103
Japanese Ni-Cr-Mo high strength alloy steel
Grade Details
| Grade | JIS G4103 SNCM439 |
| Standard | JIS G4103 |
| Description | Japanese Ni-Cr-Mo high strength alloy steel |
| Applications | Crankshafts, gears, heavy duty shafts, aircraft components |
Equivalent / Similar Grades
Chemical Composition (%)
| C |
Si |
Mn |
Cr |
Mo |
Ni |
| 0.36–0.43 |
0.15–0.35 |
0.60–0.90 |
0.60–1.00 |
0.15–0.30 |
1.60–2.00 |
Mechanical Properties
| Tensile Strength |
≥980 MPa |
| Yield Strength |
≥835 MPa |
| Elongation |
≥12% |
| Hardness |
293–352 HB |
Typical Available Sizes
| Round Bar |
20mm–350mm dia |
| Flat Bar |
25×10mm–250×75mm |
Sizes are indicative. Contact seller for exact availability.
Active JIS G4103 SNCM439 Listings on M-EX