ASTM A407 Cold Drawn Steel Wire for Coiled-Type Springs

Our Advantage

1. Stable linearity, good formability. Uniform and beautiful surface condition.
2. High plasticity and good fatigue resistance. And we provide Self-Inspection Reports and Raw-Material Test Certificates.
3. Professional anti-rust protective packaging. On time delivery, competitive price.
4. Large stock available, no MOQ requirement.

Chemical composition

Supplying Size:

Diameter:0.01-8mm

Permissible Variations in Wire Diameter

Tensile Strength Requirements

Surface Condition

The surface of the wire as received shall be smooth and have a uniform finish suitable for coiling or shaping the various types of springs. No serious die marks, scratches, or seams may be present.
The wire shall be properly cast. To test for cast, a few convolutions of wire shall be cut from the coil and allowed to fall on a flat surface. The wire shall lie substantially flat on itself and shall not spring up and show a wavy condition.
Each coil shall be one continuous length of wire,properly coiled. Welds made prior to cold drawing are permitted. Weld areas need not meet the mechanical requirements of this specification.

Ordering Information

Orders for material under this specification should include the following information for each ordered item:
Quantity (weight),
Name of material (name of specific type required)
Diameter
Packaging, marking, and loading
ASTM designation and date of issue, and
Heat (cast) analysis (if desired).

Manufacture Process

wire drawn to size by cold deformation of a starting material that has been subjected to a thermal treatment of patenting, giving structure suitable for subsequent rolling or drawing.
1 The steel shall be made by any of the following processes: open-hearth, basic-oxygen, or electric-furnace.
2 A sufficient discard shall be made to ensure freedom from injurious piping and undue segregation.
3 The wire shall be cold-drawn to produce the desired mechanical properties

For the manufacture of the following types of upholstery springs:

1.1.1 Type A—Coiled (Marshall pack),
1.1.2 Type B—Coiled and knotted,
1.1.3 Type C—Coiled and knotted (offset style),
1.1.4 Type D—Coiled and hooked (single and cross helicals),
1.1.5 Type E—Coiled and hooked (short tension—regular tensile strength),
1.1.6 Type F—Coiled and hooked (short tension—high tensile strength),
1.1.7 Type G—Regular lacing,
1.1.8 Type H—Automatic lacing,
1.1.9 Type I—Zig-zag (U-formed),
1.1.10 Type J—Square-formed, and
1.1.11 Type K—Sinuous for furniture spring units.

Packaging, Marking, and Loading

Packaging of the coils of wire shall be by agreement between the producer and the purchaser. This agreement shall include coil dimensions and weights.
When specified, the packaging, marking, and loading shall be in accordance with Practices A700.
Marking shall be by a tag securely attached to each coil of wire and shall show the identity of the producer, size of the wire, type, and ASTM specification designation.
Bar Coding—In addition to the previously-stated identification requirements, bar coding is acceptable as a supplementary identification method. Bar coding should be consistent with AIAG Standard AIAGB-5 02.00, Primary Metals Identification Tag Application. The bar code may be applied to a substantially affixed tag.

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.