SAE 4340 Forging Ingots
AISI / SAE 4340 nickel-chromium-molybdenum steel. A tough, high strength steel with excellent hardenability. Often chosen for heavy-duty, shock-loaded parts.
SAE 4340 chemical composition
| C | 0.38 – 0.43 % |
|---|---|
| Si | 0.15 – 0.35 % |
| Mn | 0.60 – 0.80 % |
| Ni | 1.65 – 2.00 % |
| Cr | 0.70 – 0.90 % |
| Mo | 0.20 – 0.30 % |
Indicative ranges from the common grade standard. The final analysis is as per the order and the heat test certificate.
Equivalent grades
EN24 / 817M40 · 34CrNiMo6 / 1.6582 approx.
Equivalents are approximate. See the grade equivalents guide.
SAE 4340 as a forging ingot
4340 is ordered in large forging ingots for rotors, heavy shafts and thick-section forgings.
Kesari Alloys casts SAE 4340 in square, fluted and round shapes from M1.5 to M22, with vacuum degassing, ladle refining and bottom pouring. See the ingot size chart for dimensions and weights.
Heat treatment: Hardened and tempered. Deep hardening in large sections.
SAE 4340 ingot manufacturer and supplier
As a SAE 4340 forging ingot manufacturer and SAE 4340 steel ingot manufacturer, Kesari Alloys casts SAE 4340 in square, fluted and round shapes. We are also a SAE 4340 steel ingot supplier India forging shops can enquire with, a SAE 4340ingot supplier India wide, and a SAE 4340 ingot manufacturer India customers can visit at the Bhiwadi plant.
As a 4340 forging ingot manufacturer and 4340 steel ingot manufacturer, Kesari Alloys casts 4340 in square, fluted and round shapes. We are also a 4340 steel ingot supplier India forging shops can enquire with, a 4340ingot supplier India wide, and a 4340 ingot manufacturer India customers can visit at the Bhiwadi plant.
Typical forged parts in SAE 4340
- Heavy shafts and rotors
- Landing-gear-type and high stress parts (subject to specification)
- Gears
- Oil field components
Applications: shafts and crankshafts, oil and gas equipment, the power sector, open die forging, wind energy components.
Related grades
SAE 4340 questions
What is SAE 4340 steel used for?
SAE 4340 is used for heavy shafts and rotors, landing-gear-type and high stress parts (subject to specification), gears, oil field components.
What is the equivalent of SAE 4340?
EN24 / 817M40 · 34CrNiMo6 / 1.6582 approx.. Equivalents are approximate, so check the limits in your specification.
Does Kesari Alloys supply SAE 4340 forging ingots?
Yes. SAE 4340 is available as square, fluted or round forging ingots, vacuum degassed and bottom poured. Send the size, quantity and standard to info@ksl.in for a quotation.