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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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Alloy 803 stainless steelASTM B564 / ASME SB564 – Forgings (UNS N08803 flanges, fittings, valve components)
ASTM B829 – General requirements for seamless pipe and tube
ASTM B830 – General requirements for plate, sheet, and strip
ASTM B751 – General requirements for welded pipe and tube
EN 10204 / EN 10302 – Inspection certificates (3.1B) and creep‑resisting alloys (EN 1.4876 type)
ASME BPVC Section II, Part A – For pressure‑retaining components (boilers, pressure vessels)
JIS G4902 – Nickel alloys for pressure vessels and piping
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SUS416 stainless steelASTM A314 – Stainless steel billets and bars for forging (416 for forged valve bodies and fitting components)
ASTM A493 / A895 – Cold‑formed wire / round wire for spring and fasteners (416 wire for bolts, screws)
ASTM A380 – Cleaning and descaling (for machined parts)
EN 10088‑3 – Grade X14CrMoS17 / 1.4005 (equivalent to ASTM 416) for bars and wire
JIS G4303 – SUS416 stainless steel bars (cold or hot finished)
JIS G4318 – SUS416 stainless steel wire rod
JIS G4319 – SUS416 stainless steel fasteners
GB/T 1220 – Chinese grade Y1Cr13 / Y12Cr13 (Y indicates free‑cutting)
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