302 Stainless Steel Spring Wire
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
| C | Si | Mn | Ni | P | S | Cr | N |
| max 0.12 | max 1 | max 2 | 8.00-10.0 | max 0.045 | max 0.030 | 17.0 - 19.0 | max 0.10 |
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.
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