Stainless Steel Wire

Austenitic / Duplex Steel / Nickel Alloy / Cobalt Alloy

Hot Sale Bright/Matte Surface 302/3021A Stainless Steel Spring Wire with ISO certificate

302/304 stainless steel wire is the most widely used stainless steel wire due to its high corrosion resistance and good tensile strength. It is a general-purpose stainless steel alloy, usually consisting of 18% chromium and 8% nickel. For spring applications, it is typically offered in the cold drawn condition. 302/304 springs have good strength at moderate temperatures up to 500°F.

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Hot Sale Bright/Matte Surface 302/3021A Stainless Steel Spring Wire with ISO certificate

Hot Sale Bright/Matte Surface 302/3021A Stainless Steel Spring Wire with ISO certificate



302/304 stainless steel wire is the most widely used stainless steel wire due to its high corrosion resistance and good tensile strength. It is a general-purpose stainless steel alloy, usually consisting of 18% chromium and 8% nickel. For spring applications, it is typically offered in the cold drawn condition. 302/304 springs have good strength at moderate temperatures up to 500°F. 302/304 is non-magnetic in the annealed condition, but the material in the spring condition is slightly magnetic due to some martensitic transformation during the drawing operation. The higher the cold reduction, the higher the degree of magnetism.


MaterialStainless Steel Wire
Grade300series (301, 302,3021A, 304, 304L, 304H, 304N, 304ES, 316L, 321...) 130M, 200CU, 201CU, 202, , 410, 420, 430,etc
StandardASTM A580, JIS G4309, EN 10088-3, GB/T4240, etc
Sizeφ0.15mm-φ16mm; or according to customers' requests
SurfaceBright, matte ,downy, electrolysis bright ,cloudy ,plain ,black,etc
ConditionAnnealed and Soft, 1/2 hard, 3/4 hard and full hard
TypeSpring Wire (B-SPR/D-SPR)
PackingWoven bag, core, wooden reel, etc



Steel GradeDINChemical composition
CSiMnPSNiCrMoOther composition
302WNr1.6900≤0.15≤1.0≤2.0≤ 0.045≤0.038.0-1017.0-19.0≤0.6Cu:≤1.0
3021A
≤0.15≤1.0≤2.0≤ 0.045≤0.038.0-1017.0-19.0≤0.6


IMG_20220831_141556.jpgIMG_20220831_140852.jpg

Application for 304 stainless steel wire:

302: High-Quality Springs

3021A: Tight Wire


Steel GradePhysical Property
Y.ST.SEL.HRB
3022486276278
3021A22760055


MTSCO is a professional supplier of steel wire with complete production technology and rich management experience. We produce spring wire, electrolytic polished wire, fine wire, wire for netting, hose wire, welding wire, cold heading, locking wire, and other products. Our main materials are stainless steel and alloy steel, and the raw materials we use are from the biggest and most well-known steel mills in China, we can supply wire in sizes ranging from 0.15 mm to 16 mm in diameter. Our factory is well-equipped and our products conform to ASTM, DIN, GTB, JIS, JSG, and other international standards. We have experienced foreign trade staff with high-quality service and can produce high-quality products according to customers' requirements.


Quality Control


Raw Materials: MTC checking(PMI), Tensile strength test, Surface/Dimension inspection
Prodcution: Specially assigned person shall follow up and check according to the process flow card, and finally keep the copy
Before shipment: Mechanical properties test, Surface/Dimension inspection, or according to customers’ requirement




Manufacturing Experience

Plant Area

Max Diameter of Welded Pipe

Annealing Furnace Length

What Grades Can We Provide?

Nickel Alloy
NI-MO: N10001,N10665,N10675...
NI-CR-MO: N10276,N06022,N06035,N06455,N06002...
NI-CR-MO-CU: N06030,N06200,N08031,N08825,N08020...
NICR-MO-W: N06230...
NICKEL: N02200,N02201...
NI-CU: N04400,N05500...
NI-CR-FE: N06600,N06601,N06690,N08800,N08810,N08811...
NI-CR-MO-NB: N06625,N07718...

Austenitic
304/L/H/N, 316/L/H/N/Ti, 321/H, 309/H, 310S, 347/H, 317/L, 904L...

Duplex Steel
31803, 32205, 32750, 32760...

Cobalt Alloy
Alloy 188/ UNS R30188, Alloy L-605/ UNS R30605, Alloy S-816, Alloy 6B, UMCo50, FSX-414, MP-159...

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Of course, We can provide a few sample tubes for you to inspect and experiment.
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