ASTM A403 Stainless Steel

Manufacturers of Stainless Steel Pipe Fittings, Flange, Round Bar, Fasteners

A312 SS Pipes & Tubes, Plate, Sheet, Coil, Filler Wire, Coil

Standard:

AISI ASTM JIS SUS DIN GB

ASTM/ASME:

ASTM/ASME A403/SA403, A182/SA182, A276/SA276, A479/SA479, A312/SA312, A213/SA213, A269/SA269, A240/SA240, A666/SA666, A5.9, A580/SA580

Grades:

201, 304, 304L, 304h, 321, 316, 316L, 316Ti, 317, 317L, 309S, 310, 310S, 904L, 253MA, 254SMO, 409, 410, 420, 430, etc.

Forms and Products:

Pipes and Tubes, Buttweld Fittings, Flanges, Forged Fittings, Sheets, Plates, and Coils, Bars and Rods, Filler wire, Outlet

Applications:

Oil & Gas, Petrochemical, Power Generation, Chemical Processing, Exhaust systems, structural components, Food processing, Cladding, roofing, railings, and structural components, Surgical instruments, medical implants

Precision Metal is a leading manufacturer of high-quality stainless steel products, known for its advanced technology and commitment to excellence. Specializing in stainless steel solutions, Precision produces a wide range of products, including pipes, tubes, fittings, flanges, bars, plates, sheets, and coils. With a focus on durability, corrosion resistance, and precision engineering, our stainless steel products cater to diverse industries such as oil & gas, petrochemical, food & beverage, and construction. We ensures stringent quality control and adherence to international standards, providing reliable materials for demanding applications worldwide.

Stainless steel is a versatile and durable alloy primarily composed of iron, chromium, and other elements such as nickel and molybdenum. Its defining characteristic is its resistance to corrosion, which comes from the presence of at least 10.5% chromium. When exposed to air, chromium forms a thin, invisible oxide layer on the surface of the steel that protects it from rust and staining.

Austenitic Stainless Steel (e.g., 304, 316) is the most widely used and offers excellent corrosion resistance, high ductility, and good weldability.
Ferritic Stainless Steel (e.g., 430) is magnetic and has good resistance to corrosion but is less malleable.
Martensitic Stainless Steel (e.g., 410, 420) is known for its hardness and strength, making it suitable for applications like cutlery and tools.
Precipitation-Hardening Stainless Steel (e.g., 17-4 PH) can be heat-treated to gain superior strength and hardness.

Product	ASTM Standard	Common Grades
Pipe Fittings (Buttweld)	ASTM A403	304, 304L, 316, 316L, 321, 347, etc.
Forged Fittings	ASTM A182	F304, F304L, F316, F316L, F321, F347, etc.
Flanges	ASTM A182	F304, F304L, F316, F316L, F321, F347, etc.
Round Bar	ASTM A276, A479	304, 304L, 316, 316L, 321, 347, 410, 430
Pipes & Tubes	ASTM A312, A213, A269	TP304, TP304L, TP316, TP316L, TP321, TP347
Plates, Sheets, Coils	ASTM A240, A666	304, 304L, 316, 316L, 321, 347, etc.
Outlets	ASTM A182	F304, F304L, F316, F316L, F321, F347, etc.
Filler Wire	AWS A5.9, ASTM A580	ER308, ER308L, ER316, ER316L, ER347
Fasteners	ASTM A193, A194	B8 (304), B8M (316), B8T (321), B8C (347)

Equivalent Grades of Stainless Steel

Grade	UNS	ASTM	EN (DIN)	JIS	GOST	BS	AFNOR
304	S30400	A240/A276	1.4301 (X5CrNi18-10)	SUS304	08Х18Н10 (08X18H10)	304S15	Z6CN18-09
304L	S30403	A240/A276	1.4306 (X2CrNi18-9)	SUS304L	03Х18Н11 (03X18H11)	304S12	Z2CN18-10
316	S31600	A240/A276	1.4401 (X5CrNiMo17-12-2)	SUS316	08Х17Н13М2 (08X17H13M2)	316S31	Z6CND17-11
316L	S31603	A240/A276	1.4404 (X2CrNiMo17-12-2)	SUS316L	03Х17Н14М3 (03X17H14M3)	316S11	Z2CND17-12
321	S32100	A240/A276	1.4541 (X6CrNiTi18-10)	SUS321	08Х18Н10Т (08X18H10T)	321S31	Z6CNT18-10
347	S34700	A240/A276	1.4550 (X6CrNiNb18-10)	SUS347	08Х18Н12Б (08X18H12B)	347S31	Z6CNNb18-10
310	S31000	A240/A276	1.4845 (X12CrNi25-20)	SUS310S	20Х23Н18 (20X23H18)	310S24	Z12CN25-20
904L	N08904	A240/A276	1.4539 (X1NiCrMoCu25-20-5)	SUS890L	-	-	Z2NCDU25-20
410	S41000	A240/A276	1.4006 (X12Cr13)	SUS410	12Х13 (12X13)	410S21	Z12C13
430	S43000	A240/A276	1.4016 (X6Cr17)	SUS430	12Х17 (12X17)	430S17	Z8C17

Chemical Composition of Stainless Steel

Grade	C (%)	Cr (%)	Ni (%)	Mo (%)	Mn (%)	Si (%)	P (%)	S (%)	N (%)	Others
304	≤ 0.08	18.0 - 20.0	8.0 - 10.5	-	≤ 2.00	≤ 0.75	≤ 0.045	≤ 0.03	-	-
304L	≤ 0.03	18.0 - 20.0	8.0 - 12.0	-	≤ 2.00	≤ 0.75	≤ 0.045	≤ 0.03	-	-
316	≤ 0.08	16.0 - 18.0	10.0 - 14.0	2.0 - 3.0	≤ 2.00	≤ 0.75	≤ 0.045	≤ 0.03	-	-
316L	≤ 0.03	16.0 - 18.0	10.0 - 14.0	2.0 - 3.0	≤ 2.00	≤ 0.75	≤ 0.045	≤ 0.03	-	-
321	≤ 0.08	17.0 - 19.0	9.0 - 12.0	-	≤ 2.00	≤ 0.75	≤ 0.045	≤ 0.03	-	Ti: 5x(C+N) min.
347	≤ 0.08	17.0 - 19.0	9.0 - 13.0	-	≤ 2.00	≤ 0.75	≤ 0.045	≤ 0.03	-	Nb: 10x(C+N) min.
310	≤ 0.25	24.0 - 26.0	19.0 - 22.0	-	≤ 2.00	≤ 1.50	≤ 0.045	≤ 0.03	-	-
410	≤ 0.15	11.5 - 13.5	≤ 0.75	-	≤ 1.00	≤ 1.00	≤ 0.04	≤ 0.03	-	-
430	≤ 0.12	16.0 - 18.0	≤ 0.75	-	≤ 1.00	≤ 1.00	≤ 0.04	≤ 0.03	-	-
904L	≤ 0.02	19.0 - 23.0	23.0 - 28.0	4.0 - 5.0	≤ 2.00	≤ 1.00	≤ 0.045	≤ 0.035	-	Cu: 1.0 - 2.0

Mechanical Properties of Stainless Steel

Grade	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)	Hardness (HB)	Hardness (HRB)	Hardness (HRC)
304	515 - 750	≥ 205	≥ 40	≤ 201	≤ 92	≤ 22
304L	485 - 700	≥ 170	≥ 40	≤ 183	≤ 88	≤ 20
316	515 - 750	≥ 205	≥ 40	≤ 217	≤ 95	≤ 22
316L	485 - 700	≥ 170	≥ 40	≤ 217	≤ 95	≤ 22
321	515 - 750	≥ 205	≥ 40	≤ 217	≤ 95	≤ 22
347	515 - 750	≥ 205	≥ 40	≤ 217	≤ 95	≤ 22
310	515 - 730	≥ 205	≥ 40	≤ 217	≤ 95	≤ 22
410	415 - 735	≥ 205	≥ 20	≤ 217	≤ 95	≤ 22
430	450 - 750	≥ 275	≥ 22	≤ 183	≤ 88	≤ 20
904L	490 - 690	≥ 220	≥ 35	≤ 192	≤ 90	≤ 20

ASTM A403 Stainless Steel

Manufacturers of Stainless Steel Pipe Fittings, Flange, Round Bar, Fasteners

A312 SS Pipes & Tubes, Plate, Sheet, Coil, Filler Wire, Coil

Stainless Steel Products We Specialize In

A403 SS Pipe Fittings

A182 SS Forged Fittings

A182 SS Flanges

A276 SS Round Bar

A312 SS Pipe & Tube

A240 SS Plate, Sheet, Coil

A182 SS Outlets

A580 SS Filler Wire

A193/A194 SS Fasteners

Equivalent Grades of Stainless Steel

Chemical Composition of Stainless Steel

Mechanical Properties of Stainless Steel