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Product Information
Name UNS S17400 - Grade 17-4PH - Stainless Steel
Stocklist & Inventory Available: Round bar Dia. 10 ~ 230mm
Material Specification: ASTM A705, ASTM A693
Equivalent Grade: 17-4PH, EN 1.4542, X5CrNiCuNb16-4
Condition of delivery: Hot Forged/Rolled, Annealed / 1050 ℃ Solution treated, water/oil/ air cooled, Aged 480/520/550/620℃, air cooled
Surface condition Cold finished - Peeled, Ground, Polished, Rough turned
Product Shape available: Round bars, Flat bars, Ring, Forged Step Shaft, Tubings.
Customs HS code: 722219 / 722220 / 722230
Third-party Inspection: SGS, TUV, BV, CCIC
Material origin From: P. R. China.
Terms of price: Ex-works, CFR, CIF, DDP
Mode of transportation: Sea Shipment, Air Cargo,
Certification For Exportation: MTR, COC, Certificate of Origin, Form A/E, Invoice, Packing list, Bill of Lading.
Min.order quantity per batch: 200 KG
Heat Treatment Practice: Solution annealed 1050 ℃, water, oil or air cooled, Aged 480 ~ 620 ℃, air cooled
Output Per Year: 200,000 Tons
UT test standards: ASTM E2375 / MIL-STD- AMS 2154 / SEP 1923 / GB/T 4162 / EN 10228-3 / EN 10308
Meltling Process Route: EAF + VD + LF / BEF + ESR / +VAR
Standard Export Packing Way: Wooden box, pallet / tray free from fumigation
Terms of payment: Bank wire
Production Lead Time: Within 20 days after 30% deposit prepayable
Description
Introduction:
UNS S17400 is a corrosion resistant grade which is soft and ductile in the solution annealed condition. Medium to high strength, good toughness and strength is obtained by the appropriate ageing treatment. As a martensitic precipitation hardening stainless it is characterised by high tensile strength and high yield strength obtained by solution annealing, followed by a single or double low temperature age hardening treatment. UNS S17400 has corrosive properties comparable to 304 austenitic stainless steel in many environments.
The alloy is usually produced by BEF & AOD followed by electroslag remelting (ESR) / VAR if necessary for special purpose.
 
Applications:
Commonly used in industries such as offshore, marine, food, paper mills, oil field and aerospace. UNS S17400 is used for components such as fasteners, couplings, screws, bushings, studs, fittings, valve stems, roller, wear rings.
 
Technical Standard: ASTM A564

Equivalent Grades
DIN ASTM AISI UNS JIS Other
1.4542
X5CrNiCuNb16-4		 Grade 630 630 S17400 SUS 630 17-4PH
AMS 5643
AMS 5622
Z6CNU17-04
10705GU-GV

Chemical Composition (Weight %)
C Si Mn P S Cr Ni Mo Other
≤ 0.07 ≤ 1.00 ≤ 1.00 ≤ 0.040 ≤ 0.030 15.0 ～ 17.0 3.00 ～ 5.00 - Cu 3.00 ～ 5.00
Nb+Ta 0.15 ～ 0.45

Mechanical Properties Under Room Temperature
Condition of heat treatment Tensile
Rm(MPa)		 Yield
Rp0.2(MPa)		 Elongation
A(%)		 Reduction in cross
section on fracture
Z (%)		 Impact
AKV/AKU(J)		 Brinell
Hardness(HBW)
Annealed ≤ 1034 ≤ 650 6.0 ～ 15.0 30.0 ～ 60.0 - ≤ 363
H900 ≥ 1380 ≥ 1275 ≥ 14.0 ≥ 50.0 ≥ 20 ≤ 420
H925 ≥ 1310 ≥ 1200 ≥ 14.0 ≥ 54.0  ≥ 34 ≤ 409
H1025 ≥ 1170 ≥ 1140 ≥ 15.0 ≥ 56.0 ≥ 47  ≤ 352
H1075 ≥ 1140 ≥ 1035 ≥ 16.0 ≥ 58.0 ≥ 61  ≤ 341
H1100 ≥ 1035 ≥ 930 ≥ 17.0 ≥ 58.0 ≥ 61 ≤ 332
H1150 ≥ 1000 ≥ 860 ≥ 19.0 ≥ 60.0 ≥ 68 ≤ 311
H1150+H1150 ≥ 965 ≥ 760 ≥ 20.0 ≥ 60.0 ≥ 108 ≤ 302
H1150M ≥ 860 ≥ 585 ≥ 22.0 ≥ 68.0 ≥ 135 ≤ 277

Shapes and Dimensions Avallable:
Round bar (Diameter): 5.5 mm to 650 mm
Wire rod (Diameter): 0.50 ~ 13mm
Square bar / Flat bar: 5mm to 610mm
Steel strip via cold rolled: T0.1 - 3 X W5 - 650 X Lmm
Forged ring: OD200 ~ 1500mm X ID150 ~ 1250 X H20 ~ 1250mm
Heavy/middle plate via hot rolled: T50 - 200mm X W80- 1200mm X L1000-3000mm
Forging piece: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM. 
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