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AISI 4340 round bar UNS G43400 36CrNiMo4 1.6511 EN24
AISI 4340 is a medium carbon, low alloy steel known for its high strength, toughness, and excellent hardenability. It contains nickel, chromium, and molybdenum, which provide superior mechanical properties compared to other alloy steels. It can be heat treated to achieve a wide range of strengths and is often used in highly stressed parts requiring high impact resistance and fatigue strength.
ASTM: 4340EN: 36CrNiMo4 / 1.6511BS: EN24 / 817M40JIS: SNCM439 / SNCM8
MaterialASTM A29 / EN 10250 / BS 970 / JIS G4103
Thickness10-1250 mm (Plate)
Width200-2000 mm
LengthAs per requirement
MOQ1 Ton
Lead Time15-30 days
PortShanghai / Tianjin / Qingdao
Response within 24 hours
In Stock — Ready to Ship
| Material Grade | ASTM A29 / EN 10250 / BS 970 / JIS G4103 | Standard | ASTM A29 / EN 10250 / BS 970 / JIS G4103 |
| Thickness Range | 10-1250 mm (Plate) | Width Range | 200-2000 mm |
| Length Range | As per requirement | MOQ | 1 Ton |
| Lead Time | 15-30 days | Port of Shipment | Shanghai / Tianjin / Qingdao |
| C | 0.38-0.43 | Si | 0.15-0.35 |
| Mn | 0.60-0.80 | P | ≤0.035 |
| S | ≤0.040 | Ni | 1.65-2.00 |
| Cr | 0.70-0.90 | Mo | 0.20-0.30 |
| Tensile Strength | ≥850 MPa | Yield Strength | ≥635 MPa |
| Hardness | Varies by condition |
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