4140 (UNS G41400)
4140 — Alloy and stainless steel in the aircraft-quality low-alloy steels group, supplied to order by DMK Alloys.
- Family
- Alloy & Stainless Steels
- Group
- Aircraft-quality low-alloy steels
- UNS
- G41400
- Supply
- To order
About 4140
4140 is a alloy and stainless steel in DMK Alloys' aircraft-quality low-alloy steels group. It is part of the extended supply range: material is produced or sourced against the governing specification stated on your purchase order, rather than sold from a stockholder's shelf.
Certified chemistry and mechanical properties are issued with the material to the ordered specification. A full published datasheet for 4140 — composition limits, typical properties and specification cross-references — is available from the export team on request.
| Attribute | Value |
|---|---|
| Designation | 4140 |
| Material family | Alloy & Stainless Steels |
| Group | Aircraft-quality low-alloy steels |
| UNS number | G41400 |
| Specification systems | UNS · AMS · ASTM · EN · British S-numbers |
| Supply basis | To order, against your governing specification |
Typical supplied forms
- Bars and billets
- Forged blanks
- Plate and sheet
- Precision-ground bar
- Machined components to drawing
Forms and dimensional ranges for 4140 are confirmed per enquiry.
Request 4140 to your specification
State the governing standard, form, dimensions, quantity and certification needs — the export team confirms availability and quotes.