Premium 4140 chromium-molybdenum alloy steel plate with high strength, toughness and fatigue resistance. Precision bandsaw-cut to ±1.0 mm tolerance, ASTM A829 / EN 10083-1 / JIS G4105 compliant, no MOQ and shipped globally from Malaysia.
4140 is a chromium-molybdenum alloy steel renowned for its high strength, toughness and fatigue resistance. It is widely used in industries requiring durable components, such as aerospace, automotive and oil & gas.
E STEEL SDN BHD supplies precision bandsaw-cut plates for high-strength applications — global shipping, zero MOQ.
| Carbon (C) | Chromium (Cr) | Molybdenum (Mo) | Manganese (Mn) | Silicon (Si) |
|---|---|---|---|---|
| 0.38–0.43 | 0.80–1.10 | 0.15–0.25 | 0.75–1.00 | 0.15–0.35 |
Key insight: chromium and molybdenum enhance hardenability and wear resistance.
| Property | Annealed State | Heat-Treated (QT*) |
|---|---|---|
| Tensile Strength | 655 MPa | 950–1400 MPa |
| Yield Strength | 415 MPa | 850–1200 MPa |
| Elongation (%) | 25 | 15–20 |
| Hardness (HB) | 197–235 | 280–320 |
| Impact Toughness | 50 J | 20–30 J |
*Quenched & Tempered
| Standard | Equivalent Grade |
|---|---|
| UNS | G41400 |
| EN (EU) | 1.7225 (42CrMo4) |
| JIS (Japan) | SCM440 |
| GB (China) | 42CrMo |
| ISO | 42CrMo4 |
The strength and machinability of 4140 make it ideal for:
| Grade | Key Differences | Best For |
|---|---|---|
| 4140 | Balanced strength/toughness | General high-stress parts |
| 4340 | Higher Ni content (tougher) | Aerospace components |
| 4130 | Lower carbon (more weldable) | Structural tubing |
Bandsaw technology ensures minimal kerf loss and burr-free edges.
Plates from 10 mm to 200 mm thickness.
Mill test reports (MTRs) for traceability.
Fast air/sea shipping with real-time tracking.
Yes, but preheating and post-weld heat treatment are critical to avoid cracking. Preheat to 150–260 °C and use low-hydrogen electrodes.
No. 4140 is a low-alloy steel and needs a protective coating such as plating or paint where corrosion is a concern.
3–5 business days for most orders.
No. Order one plate or bulk quantities, every piece is bandsaw-cut to the same ±1.0 mm tolerance.
Yes. Mill Test Reports (MTRs) are supplied for full traceability.
No MOQ, shipped globally from Malaysia. Send us the size and we will cut it.
