What is the composition of AISI 309 Stainless Steel?

Published composition ranges are not available for AISI 309 Stainless Steel in this record. The source entry did not carry a verified composition.

What standards cover AISI 309 Stainless Steel?

The governing standards for AISI 309 Stainless Steel include ASTM A240, ASTM A276, SAE J405, UNS S30900. Mill certificates typically call out the most specific AMS or ASTM number applicable to the product form.

What is AISI 309 Stainless Steel used for?

This alloy is used in applications demanding the property set described in its family: stainless.

How do I verify a mill certificate for AISI 309 Stainless Steel?

Compare each element value on the certificate against the min/max ranges in the spec table above. Paste the values into the SpecBase validator to get an automated pass/fail check.

AISI 309 Stainless Steel

UNS S30900 stainless

Validate composition

Quick answer

AISI 309 Stainless Steel is a stainless specified by ASTM A240, ASTM A276, SAE J405, UNS S30900. Typical composition: .

Austenitic stainless steel with high chromium and nickel content, providing excellent corrosion resistance and superior heat resistance compared to 304 stainless steel. It is often used for high-temperature applications.

Applicable Standards

ASTM A240
ASTM A276
SAE J405
UNS S30900

Frequently asked questions

Validate my sample against this spec Identify unknown alloy ← Back to all alloys

Need a tamper-evident certificate for this alloy?

Immutable, timestamped, and shareable with your customer or auditor.

Start free pilot →