S17400 - 17-4PH - Stainless Steel
UNS S17400 / 17-4PH is A Martensitic, Chromium-Nickel-Copper Precipitation Hardening Stainless Steel that Provides an outstanding combination of high strength, good corrosion resistance, good mechanical properties at temperature up to 300℃.
| Product parameters | |
| Material Category:: | Martensitic PH Stainless Steel |
| Stocklist & Inventory Available:: | Diameter 10 ~ 300mm |
| Melting Process Route:: | EAF + VD + LF / BEF + ESR / VAR |
| Heat Treatment Practice:: | Solution annealed 1050 ℃, water, oil or air cooled, aged 480 ~ 620 ℃, air cooled |
| Ultrasonic Test Standard:: | ASTM E2375 / MIL-STD- AMS 2154 / SEP 1923 / GB/T 4162 / EN 10228-3 / EN 10308 |
| Production Lead Time:: | Within 25 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.
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.
