SUH660 JIS G4315 Stainless Steel Wires For Cold Heading And Cold Forging

Specification JIS G4315 Stainless steel wires for cold heading and cold forging

ASTM A493 standard, stainless steel wire and wire rods for cold heading and cold forging

ISO 4954, section 5, steels for cold heading and cold extruding

Material SUH660, 1.4980, UNS S66286

A precipitation hardening stainless steel, SUH 660 offers superior strength at high temperatures up to 700°C,

surpassing austenitic stainless steels. With a higher nickel content than Type 304, 660 special stainless steel
also contains elements as titanium and aluminum for hardening.

Age hardening is used to precipitate ’ phase [Ni3 (Al, Ti)] making this an extraordinarily strong metal at high temperatures.

Chemical composition JIS G4315

Typical mechanical properities

SUH660 stainless steel wire delivered in solution annealed

Tensile strength: 603 Mpa

Elongation: 60

Reduction of area A: 78

Heat treatment

Precipitation hardening Stainless steel 660 alloy.

Its strength is increased through aging after solution heat treatment.

Two stages of heat treatment are generally carried out, as follows:
Solution heat treatment: 980°C; oil or water cooling
Age hardening: 720°C × 16hr; air cooling
After solution heat treatment, either oil or water cooling is required, though air cooling is better for thinner metal.

Note that it is important to use a suitable temperature and holding time for aging to obtain the target strength.

Applications

an excellent choice when high-temperature strength is required like bolts, fasteners, automotive industry.

Wuxi Guanglu Special Steel Co., Ltd. – your productivity partner for high performance specialty alloys.

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