Stainless Steel 321H Flanges

Stainless Steel 321H Flanges

Arrow Piping Solutions is a reliable manufacturer and supplier of Stainless Steel 321H Flanges in India. We provide a comprehensive range of ASTM A182 SS 321H Pipe Flanges, including Plate Flanges, SORF Flanges, Lap Joint Flanges, Socket Weld Flanges, Threaded Flanges, and Spectacle Blind Flanges at competitive prices.

Stainless Steel 321H is a titanium-stabilized austenitic stainless steel known for its resistance to intergranular corrosion and excellent weldability under high temperatures. Alloy 321H, the high-carbon version of 321H, enhances strength at elevated temperatures and maintains toughness and oxidation resistance. These properties make 321H flanges ideal for demanding environments.

Arrow Piping Solutions manufactures SS 321H Flanges in various sizes, dimensions, pressure classes, and standards to meet industry demands across chemical, petrochemical, marine, pharmaceutical, aerospace, and power generation sectors. We ensure top-notch quality and precision in every product.

Specifications of Stainless Steel 321H Flanges

• Specification: ASTM A182 / ASME SA182
• Dimension Standard: ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, JIS
• Size: 1/2" (15 NB) to 48" (1200 NB)
• Class / Pressure: 150#, 300#, 600#, 900#, 1500#, 2500#, PN6 to PN64
• Flange Face Type: Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

Equivalent Grades

STANDARD	WERKSTOFF NR.	UNS	JIS	EN
SS 321	1.4541	S32100	SUS 321	X6CrNiTi18-10
SS 321H	1.4878	S32109	SUS 321H	X12CrNiTi18-9

Chemical Composition

Grade	C	Mn	Si	P	S	Cr	N	Ni	Ti
SS 321	0.08 max	2.0 max	1.0 max	0.045 max	0.030 max	17.00 - 19.00	0.10 max	9.00 - 12.00	5(C+N) – 0.70 max
SS 321H	0.04 – 0.10	2.0 max	1.0 max	0.045 max	0.030 max	17.00 - 19.00	0.10 max	9.00 – 12.00	4(C+N) – 0.70 max

Mechanical Properties

Density	Melting Point	Tensile Strength	Yield Strength (0.2% Offset)	Elongation
8.0 g/cm³	1457 °C (2650 °F)	75000 psi / 515 MPa	30000 psi / 205 MPa	35%

Standard Sizes and Dimensions

Standard	Class	Diameter	Bolt Circle Diameter	No. of Bolts	Bolt Size	Bolt Hole Dia
ANSI 150	150	89	60	4	13	16
ANSI 300	300	95	67	4	13	16
ANSI 600	600	95	67	4	13	16
ANSI 900	900	121	83	4	19	22
PN10	10	95	65	4	M12	14
PN16	16	95	65	4	M12	14

Application Industries