Product Details
SUS/ASTM 302 Hard Stainless Steel Spring Wire 0.25-18mm
Driven with perfection, we are engaged in catering to the
variegated requirements of the customers by bringing forth a
comprehensive range of Hard Stainless Steel Spring Wire. These are made of best quality stainless steel procured from
vendors of high repute in the market. We employ our latest
technology and machinery in the manufacturing of these products.
Our skilled and brilliant personnel manufacture these products with
utmost care so as to produce products of flawless quality.
Applications:
Compression Springs
Extension Springs
Size0.25 mm to 18mm Grades302, 304, 304H, 316, 1.4310 and
others.FinishBright, Matt, Stearate Coated, De-coated.Temper Half
Hard, 3/4 Hard, Hard, Full hard.Tolerance As per ASTM A313 / EN
10270-3Packing Coils, Wooden Spool, Plastic Spool, Compact Coil.
AISI 302/304 Stainless Steel Wire
– This is the most popular stainless steel for springs, exhibiting
good tensile strength, high corrosion resistance, good heat
resistance, and slight magnetic properties. It maintains its
strength at temperatures up to 550 degrees F.AISI 316 Stainless Steel Wire
– 316 stainless steel wire exhibits better corrosion resistance
than 302/304 alloy wire, though it has less tensile strength. It
has superior cold forming properties and exhibits short term
tensile and creep strength at temperatures up to 550 degrees F. It
is used for springs in corrosive environments that do not require
high impact or load strength.
Products Details
1 Excellent quality, high cost performance, suitable for
manufacturing precision springs
2 Excellent microstructure, durable, can be widely used in
automotive, office equipment and household appliances
3 Market-oriented, adhere to using of high-quality imported
materials and Baosteel materials
Chemical Composition(%)
Steel Grade | C | Si | Mn | P | S | Cr | Ni | N |
302 | 0.15max. | 1.00max. | 2.00max. | 0.045 max | 0.030 max | 17.0-19.00 | 8.0-10.0 | 0.10max. |
Company Profile
Toponewire is one of the largest stainless steel production
manufacturer in Mainland.
We have been active in the production, processing and supplying of
stainless steel productions to industries for over 20 years. As a
leading supplier of stainless steel productions, our vast catalogue
of products is export to over 50 countries worldwide and we ensure
to hold enough stock to deliver minimal lead times, catering to the
varying demands of our customers.

From our head factory in Ningbo, ZheJiang, we have provided
stainless steel products and services to multiple sectors that span
over the whole world. There is no limit to our reach as we continue
to develop within growing markets and territories.
We are proud to work closely with industry and academic partners to
continually improve our products and services, as a result, we have
patented products designed to save you time and money. We operate
within the scope of ISO 9001:2015 accredited management system and
all the raw materials are procured from top level steelworks in
China.
Our products are rigorously inspected to ensure they are within
tolerance of our customer's specifications, we work with
accredited laboratories for specialised material testing and
chemical analysis.
In addition, we use x-ray fluorescence technology to meet our high
inspection standards and to ensure that our customers get the best
quality products.





