SA182 F304 Forged Stainless Flanges & Fittings

ASME SA182 / ASTM A182 Grade F304 (UNS S30400) forged flanges/fittings is a forged or rolled austenitic stainless flanges, fittings, valves and parts grade under ASTM A182/A182M; ASME SA182. This specification page covers grade identity, chemistry, mechanical requirements, related grades, and RFQ practice. Accept material against the ordered edition and the mill test certificate.

Grade Identity and Delivery Condition

ASME SA182 / ASTM A182 Grade F304 forged flanges/fittings is supplied for projects that name this designation on the purchase order or calculation sheet. Standard delivery condition is Solution annealed and liquid quenched per A182. Gangsteel supplies export plate and related products with EN 10204 documentation. Do not accept an alternate heat-treatment route unless a written concession changes the specification requirement.

Chemical Composition - Heat Analysis (ASME SA182 / ASTM A182 Grade F304 forged flanges/fittings)

Heat analysis for A182 F304 (UNS S30400). Forging product - not A240 plate; Ni window is 8.0-11.0 (plate 304 often 8.0-10.5).

Element	Min %	Max % / requirement
C	-	<=0.08
Mn	-	<=2.00
P	-	<=0.045
S	-	<=0.030
Si	-	<=1.00
Ni	8.0	11.0
Cr	18.0	20.0
N	-	<=0.10

Mechanical Properties (ASME SA182 / ASTM A182 Grade F304 forged flanges/fittings)

Confirm thickness, specimen orientation, and any supplementary impact, UT, or hardness requirements on the PO.

Property	Requirement
Tensile strength, min	75 ksi [515 MPa]
Yield strength (0.2% offset), min	30 ksi [205 MPa]
Elongation in 50 mm or 4D, min	30%
Reduction of area, min	50%
Heat treatment	Solution anneal + liquid quench

Related / Near-Equivalent Grades

Near-equivalents are for cross-reference only. They are not automatic code substitutes. Substitution requires engineer approval and matching certificate scope.

System	Grade	Note
ASTM plate	A240 Type 304	Plate twin chemistry close but product form differs
EN	1.4301 forgings	Confirm
UNS	S30400	F304

Frequently Asked Questions

What is ASME SA182 / ASTM A182 Grade F304 forged flanges/fittings?

ASME SA182 / ASTM A182 Grade F304 (UNS S30400) forged flanges/fittings is a forged or rolled austenitic stainless flanges, fittings, valves and parts under ASTM A182/A182M; ASME SA182. It is ordered when drawings or the calculation sheet name this designation specifically.

What chemical composition applies to ASME SA182 / ASTM A182 Grade F304 forged flanges/fittings?

Controlled elements and limits are tabulated above from the governing standard. Always verify the heat analysis on the MTC against the ordered edition.

What mechanical properties should buyers expect for ASME SA182 / ASTM A182 Grade F304 forged flanges/fittings?

Tensile, yield, elongation, and related limits are tabulated above. Design allowables must come from the applicable pressure-vessel or structural code, not from a web summary.

What delivery condition is required for ASME SA182 / ASTM A182 Grade F304 forged flanges/fittings?

Standard delivery is Solution annealed and liquid quenched per A182. State it explicitly on the PO. Do not accept an alternate route without a written concession.

How does ASME SA182 / ASTM A182 Grade F304 forged flanges/fittings differ from near-equivalent grades?

Near-equivalents may differ in carbon or alloy bands, tensile class, impact temperature, or heat treatment. Substitution needs engineering approval and matching certificate scope.

How do I RFQ ASME SA182 / ASTM A182 Grade F304 forged flanges/fittings from Gangsteel?

Send ASME SA182 / ASTM A182 Grade F304 (UNS S30400) forged flanges/fittings, thickness x width x length, quantity or tonnage, delivery condition, optional impact/UT/Z tests, EN 10204 3.1 or 3.2, destination, and any dual-mark needs. Gangsteel replies with mill options, lead time, and packing notes.

Ordering and Mill Certificates

State grade ASME SA182 / ASTM A182 Grade F304 (UNS S30400) forged flanges/fittings, dimensions, quantity, delivery condition, optional NDT/PMI, and certificate (EN 10204 3.1 standard; 3.2 when third-party inspection is ordered). Gangsteel supplies export plate and related products with mill test certificates. Contact Gangsteel for stock and mill production RFQs.