What AMS 6257 covers
AMS 6257 is the aerospace material specification for steel bars, forgings, and tubing, consumable electrode vacuum re-melted normalized and tempered.
AMS 6257 applies to alloy steel grade AISI 4340 MOD 300M, as steel, chrome-nickel-molybdenum (8740) bars and re-forging stock (aircraft quality), in the consumable electrode vacuum re-melted normalized and tempered condition.
Titanium Industries stocks Alloy Steel Grade AISI 4340 MOD 300M Round Bar to AMS 6257.
Specifications that cross-reference AMS 6257 include AMS 2300, AMS 6417, AMS 6419 and SAE 434M.
For AMS 6257 material, request a quote online or contact your nearest Titanium Industries location. The information on this page is for reference only and does not replace the specification itself.
Weight Calculator
AMS 6257
Alloy Steel Grade: AISI 4340 MOD 300M Product Forms: Steel, Chrome-Nickel-Molybdenum (8740) Bars and Re-forging Stock (Aircraft Quality) Condition: Consumable Electrode Vacuum Re-melted Normalized and Tempered Scope: This specification covers a premium aircraft-quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock.
Product availability:
- Alloy Steel Grade AISI 4340 MOD 300M Round Bar
DISCLAIMER: The use of this information should be considered strictly voluntary. Information contained in this page or across the domain, may contain typographical errors and are for reference only. Information presented are purely generalizations and are not a substitution for AMS specifications.
DISCLAIMER: Alloy data sheets are for reference only, not for design purposes.
| Chemical Composition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| C 0.38 - 0.43% Max | Mn 0.65 - 0.90% | Si 1.45 - 1.80% | P 0.010% Max | S 0.008% | |||||
| Cr 0.70 - 0.95% | Ni 1.65 - 2.00% | Mo 0.30 - 0.50% | V 0.05 - 0.10% | Cu 0.35% Max | |||||
AMS 6257: questions and answers
What does AMS 6257 cover?
What does AMS 6257 cover?
AMS 6257 covers a premium aircraft-quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock.
Which products does Titanium Industries stock to AMS 6257?
Which products does Titanium Industries stock to AMS 6257?
Alloy Steel Grade AISI 4340 MOD 300M Round Bar.
Which specifications cross-reference AMS 6257?
Which specifications cross-reference AMS 6257?
AMS 2300, AMS 6417, AMS 6419 and SAE 434M.