China Stainless Steel Coil Wire manufacturer
Ningbo Huayuan Metal Products Co., Ltd.

Ningbo Huayuan Metal products Co.,Ltd

Toponewire international Co.,Ltd


26 Years Of Service ---Stainless Steel Wire

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A580 Standard Stainless Steel Coil Wire Bright Surface 250-1000mm

A580 Standard Stainless Steel Coil Wire Bright Surface 250-1000mm

A580 Standard Stainless Steel Coil Wire Bright Surface 250-1000mm

Product Details:

Place of Origin: China
Brand Name: Toponewire
Certification: ISO9001:2015
Model Number: 0.3-18mm

Payment & Shipping Terms:

Minimum Order Quantity: 500KG
Price: Negotiable
Packaging Details: coil, spool with plate.
Delivery Time: 1-15 days
Payment Terms: T/T, L/C, D/A, D/P, Western Union, MoneyGram
Supply Ability: 500tons per month
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Detailed Product Description
Surface: Bright Coil Inner Diameter: 250-1000mm
Packing: Coil Or Special Packing With Plate Material: 302
Status: Soft , Semi-soft Standard: JIS G. EN. ASTM. DIN. GB Etc
High Light:

ss spring wire


wire for making springs

302 stainless steel spring wire based on ASTM A580 spring wire



Partner With ToponeWire, Customize Your Solutions, and Take Your Company to a World-Class Level


ToponeWire has a long history of producing only the highest quality stainless steel wire for the spring industry. Our customers have come to rely on the engineering and metallurgical services provided by Sumiden Wire. When you need a reliable, domestic producer who can provide unsurpassed quality, service, and delivery, give us a call.


Toponewire has stocks of most types of spring wire, which is the raw material in the production of springs and spring solutions.

This includes black wire, oil-hardened and stainless steel wire, covered bronze wire and beryllium-copper wire.

Our suppliers of raw materials are recognized steel and wire producers. In this way we ensure the production of your requirement for specialized solutions and uniform springs regardless of the quantity and

size of the springs.


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.

Mechanical Properties(Cold finished)

Steel Grade Tensile Strength (Mpa) Yield Strength (Mpa) Elongation (%) Area Reduction Ratio C (%)
302 620 min 310 min 30 min 40 min


Mechanical Properties(Annealed)

Steel Grade Tensile Strength (Mpa) Yield Strength (Mpa) Elongation (%) Area Reduction Ratio C (%)
302 520 min 210 min 35 min 50 min


Spring wire


Spring wire is a complex raw material. The wire ensures the spring's ability to change form when it is coiled or processed in some other way. At the same time the wire needs to have a strength and hardness that ensures its stability when after compression or expansion the spring returns to its original form.


The tensile strength is important

Most springs are produced from spring wire - also known as carbon wire - where the carbon content is between 0.5 and 1.2 percent depending on the requirement for the tensile strength.

Spring wires with a higher tensile strength are used when there are increased requirements for the wear resistance of the spring.

The tensile strength is derived from the spring wire going through a special hardening and subsequent pulling process.


Oil-hardened or stainless-steel wire

Toponewire has many years of experience with specialized springs so we know which raw materials best suit your needs.

This may be oil-hardened wire or springs in a stainless material, which puts different demands on raw materials and manufacture.


Seawater-resistant wire

For example, if the spring needs to be seawater-resistant or non-magnetic, Toponewire uses hard-drawn bronze wire.


About Us


Responsibility is the assurance of quality, and quality is the life of corporation. We are looking forward to long term cooperation with customers, we will make best service and after sales service for all of our customers. If you have any inquiry, please don’t hesitate to contact us. We will reply you at the first time as we can.


After years of development, we have established perfect sales network and integrated after-sale service system at domestic and abroad, which enables the company to provide timely, accurate and efficient services, and won good customer reputations. The products are sold all over in China and exported to more than 30 countries and regions such as Europe, America, Southeast Asia, South America, Middle East and Africa. The production, sales volume and scale are all ranked first in the same industry.



Contact Details
Ningbo Huayuan Metal Products Co., Ltd.
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Ningbo Huayuan Metal Products Co., Ltd.
72#longxing road, wuxiang industry zone, yinzhou district, Ningbo, Zhejiang.
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