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.

For over 20 years, Fushun Steel, have been dedicated to manufacturing high-quality spring steel wire. Our stable quality and superior technique are the foundations of our success, and we pride ourselves on delivering products that meet or exceed our customers' expectations. With a focus on innovation and efficiency, we utilize the latest technologies to ensure consistent quality and timely delivery.

We have more than 400 employees and our plant covers an area of nearly 15,000 square meters, with an annual output of 100,000 tons. Our advanced equipment allows us to produce high-quality spring steel products efficiently, meeting the needs of our customers.

In the production of spring steel wire, a variety of specialized equipment is essential. Shot Peening Machine. Wire Drawing Machine. Phosphating Equipment. Annealing Furnace. Polishing Equipment. Wire Coiling Machine. End Grinding Machine. Tensile and Compression Testing Machine.

Our commitment to excellence and reliability has resulted in long-standing partnerships with some of the biggest names in the industry. Like MW Industries, NHK Spring, Scherdel, Sogefi, Mubea etc. We also have established partnerships with several prominent Chinese steel groups, like Baowusteel, Xinyusteel, Nanjinsteel, Shagang etc.

Our spring steel wire comes in various categories such as music wire, hard drawn wire, oil tempered wire, chrome silicon wire, chrome vanadium wire, stainless steel wire, nickel plated wire, phosphate coated wire, galvanized wire, and copper coated wire.

Spring steel wire is a versatile material that is utilized in the manufacture of a wide array of products. including automotive suspension springs, valve springs, and torsion springs. Beyond springs, paper clips and mattress supports. In addition, spring steel wire is essential in the creation of retaining rings and circlips that are utilized to secure components on shafts or within bores, and in making various types of fasteners. The durability and resilience of spring steel wire also make it a key material in the manufacturing of certain types of cable, fencing, and even some musical instruments, such as piano and guitar strings, where its ability to return to its original shape after deformation is highly valued.