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254 SMO Stainless SteelASTM A182 / A182M – Forged flanges and fittings (Grade F44) for high‑temperature and corrosive service
ASTM A276 / A479 – Stainless steel bars and rods (round, square, hex, flat) for general applications and pressure vessels
ASTM A249 / A269 / A312 – Welded / Seamless austenitic tubes and pipes
ASTM A473 – Stainless steel forgings
EN 10088‑3 – Stainless steels – Semi‑finished products, bars, wire (Grade 1.4547)
EN 10216‑5 / 10217‑7 – Seamless / Welded stainless steel tubes for pressure purposes
GB/T 20878 – Chinese equivalent: 015Cr20Ni18Mo6CuN (254 SMO)
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S2507 Duplex Stainless Steel PipeASTM A789 – Seamless and welded ferritic/austenitic stainless steel tubing for general service (smaller sizes)
ASTM A999 – General requirements for alloy and stainless steel pipe
EN 10088‑3 – Stainless steels – Bars, wire, semi‑finished products (1.4410 for pipe fittings)
ASTM A182 / A182M – Forged flanges and fittings, Grade F53 (S32750) for pipe connectors
GB/T 21833 – Chinese standard for seamless/welded duplex stainless steel pipe (022Cr25Ni7Mo4N)
ISO 13628‑15 – Subsea production systems – Duplex stainless steel pipe specifications
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17-7PH Stainless SteelGB/T 3280 / 4237 – Cold-rolled / Hot-rolled stainless steel sheets and plates (Chinese equivalent 07Cr17Ni7Al，0Cr17Ni7Al)
ASTM A313 – Stainless steel spring wire
ASTM A370 – Mechanical testing of steel products
AMS 5568 – Welded tubing (17-7PH stainless steel for precision components)
AMS 5678 – Wire (17-7PH stainless steel for springs)
AMS 5824 – Welding wire
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904L stainless steel plateASTM B625 – Plate, Sheet, and Strip (UNS N08904)
ASTM B677 / B673 – Seamless / Welded Pipe and Tube (for heat exchanger and marine applications)
ASTM B649 – Bars and Rods (Round, Square, Hex)
JIS G4304 / G4305 – SUS 890L (Hot‑rolled / Cold‑rolled)
GB/T 4237 / 3280 – Chinese national standard
NACE MR0175 / ISO 15156 – For oil & gas and sour service
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15-5PH Stainless Steel plateAMS 5659 – Bars, forgings, and rings (for valves and shafts)
ASTM A564 – Bars and shapes
ASTM A705 – Forgings
EN 10088‑2 / 10088‑3 – X5CrNiCu15‑5 / 1.4545 (plate, sheet, bar)
JIS G4304 / G4305 – SUS630 (similar but not exact; 15-5PH is less common)
GB/T 4238 – 0Cr15Ni5Cu3Nb (Chinese equivalent)
NACE MR0175 / ISO 15156 – For sour service and high stress applications in oil & gas
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17-4PH Stainless steelAMS 5643 – Bars, forgings, and rings (17-4PH stainless steel for valves and shafts)
AMS 5622 – Sheet and strip (17-4PH stainless steel for aerospace components)
AMS 5604 – Wire (17-4PH stainless steel for springs and fasteners)
AMS 2759 – Heat treatment of precipitation-hardening steel parts
ASTM A705 – Forgings (UNS S17400)
EN 10088‑2 / 10088‑3 – Grade X5CrNiCu17‑4 / 1.4542 (plate, sheet, bar)
JIS G4304 / G4305 / G4309 – SUS630 (equivalent for plate, sheet, wire)
GB/T 3280 / 4237 / 1220 – 05Cr17Ni4Cu4Nb (Chinese national standard)
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15-7 PH stainless steelAMS 5529 – Cold-rolled strip for springs (15-7PH spring stainless steel, CH900 temper)
AMS 5644 – Bars and forgings (for precision parts and shafts)
ASTM A564 – Bars and shapes (UNS S15700)
ASTM A705 – Forgings
EN 10088‑2 / 10088‑3 – Grade X7CrNiAl17-7 / 1.4568 (plate, sheet, bar)
JIS G4313 / G4314 – SUS631 (cold-rolled strip for springs, wire)
GB/T 3280 / 4237 – 07Cr17Ni7Al (Chinese equivalent)
NACE MR0175 – Limited use; not recommended for sour service
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253MA Stainless SteelASTM A312 / A213 – Seamless and welded pipe / tube (253MA for exhaust systems and petrochemical furnaces)
ASTM A182 / A182M – Forged flanges and fittings (Grade F45 for high temperature service)
ASTM A479 – Bars and shapes (UNS S30815)
EN 10216‑5 / 10217‑7 – Seamless / Welded tubes for pressure purposes (1.4835)
EN 10095 – Heat resisting steels and nickel alloys
JIS G4311 / G4312 – Heat‑resistant stainless steel plates and sheets (SUS310S is not equivalent; 253MA is proprietary)
GB/T 4238 – Chinese heat‑resistant steel plate (closest grade 1.4835 not directly listed)
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