Cold Rolled Steel Strip 17-7PH Stainless Steel UNS S17700 EN 1.4568 SUS631

Cold Rolled Steel Strip 17-7PH Stainless Steel UNS S17700 EN 1.4568 SUS631

17-7 PH is a precipitation hardening stainless steel that provides high strength and hardness,

excellent fatigue properties, good corrosion resistance, good formability, and minimum distortion upon heat treatment.

It is easily formed in the annealed condition, then hardened to high strength levels by simple heat treatments to

Conditions RH 950 and TH 1050. The exceptionally high strength of Condition CH 900 offers many advantages

where limited ductility and workability are permissible.

Corrosion resistance in Conditions TH 1050 and RH 950 is generally superior to that of martensitic hardenable

chromium stainless steels such as materials 410, 420 and 431.

Corrosion resistance in Condition CH 900 approaches that of Type stainless 304 in most environments.

Material

Chemical composition %

C: 0.09 max
Mn: 1.00 max
Si: 1.00 max
P: 0.040 max
S: 0.030 max
Cr: 16.0 – 18.0
Ni: 6.5 – 7.75
Al: 0.75 – 1.50
Fe: Balance

Applications
Springs, Rings, Washers, Heat Exchangers, Tubing

Physical Properties
Density:
0.282 lb/in3, (7.81 g/cm3)
0.277 lb/in3, (7.67 g/cm3)

Modulus of Elasticity (E):
At 70°F (20°C): 29.5 x 103 ksi (200 GPa)

Modulus of Rigidity (G)
At 70°F (20°C): 10.5 x 103 ksi (72 GPa)

Coefficient of Expansion:
9.5 µin/in.-°F at 70-600°F (17.1 µm/m-°C at 21-316°C)
6.4 µin/in.-°F at 70-600°F (11.5 µm/m-°C at 21-316°C)

Electrical Resistivity: 80.0 µohm-in, (83.8 µohm-cm)

Thermal Conductivity:
114 Btu-in/ft2hr-°F at 300°F
16.4 W/m-°C at 149°C

Specifications
Strip and Foil: AMS 5528, AMS 5529, ASTM A693, ASTM F899, MIL-S-35043

Typical Mechanical Properties
Annealed, condition A
Heat Treatment: 1900-2050°F (1038-1121°C)
Tensile Strength: 150 ksi max (1034 MPa)
Suggested Operating Conditions: up to 900°F (482°C)

Spring Temper, condition C
Heat Treatment: (Stress relieve as needed)
Tensile Strength: 200 ksi min (1380 MPa)
Suggested Operating Conditions: up to 650°F (343°C)

Spring + Aged (CH 900)
Heat Treatment: 900°F (482°C) for 60 mins
Tensile Strength: 240 ksi min (1650 MPa)
Suggested Operating Conditions: up to 650°F (343°C)

For Details, please Contact

WUXI GUANGLU Special Steel Co., Ltd.

Stainless martensitic • precipitation hardening steel • stainless ferritic — Our answer to your needs

Tel: +86 510 81812873

Email: export@guanglusteel.com