ASTM A313 Type 302 UNS S30200 Class 1 and Class 2 Stainless Steel Spring Wire

stainless 302 is a variations of the 18% chromium / 8% nickel austenitic stainless. 302 is a slightly higher carbon version of 304, often found in strip and wire forms.

Chemical composition

Specification

ASTM A313M-2003 Stainless Spring Steel Wires

Supplying Size

Diameter 0.1 to 15 mm ; 0.005 to 0.6 inch

Delivery condition

Types 302 Class 1 shall be cold drawn to produce the required mechanical properties.

Types 302 Class 2, and Grade XM-16 shall be furnished in the cold-drawn condition ready for fabrication. Type 302 Class 2 shall be stress relieved following fabrication and meet the requirements shown in Table. The nominal as-drawn tensile strengths are provided as a guide for the spring manufacturer.

Surface condition

Stainless steel spring wire is supplied with different types of finish such as bright, copper, lead, oxide, and other.

Tensile Strength

Type 302 Class 2: cold drawn 2000 Mpa ; Stress Relieved 2000 - 2345 Mpa

Type 302 Class 1:

Application

Stainless steel wire is the raw material for screws, springs, metallic net, cable wire and hardware. It is widely used in filter, building and important for electronic parts, oil and fiber industry, kitchenware and hardware.

Mill test certificate

EN 10204/3.1 with all relevant data reg. chem. composition, mech. properties and results of testing.