Name

Stainless Steel WELDED pipe

Standard

ASTM A554, A249, A269 and A270, A312

Material Grade

201 ( Ni 0.8%),

202 (Ni 3.5%~4.5%),

301(Ni 5%)

304 (Ni 8%, Cr 18%),

316 (Ni 10%, Cr 18%),

316L (Ni10%~14%),

430

Outer Diameter

6mm--1016mm

Thickness

0.3mm - 20mm

Length

6m or as customers' request

Tolerance

a) Outer Diameter: +/- 0.2mm

b) Thickness: +/- 0.02mm

c) Length: +/- 5mm

Surface

Annealed and pickled

180G, 320G, 400G Satin / Hairline

400G, 500G, 600G or 800G Mirror finish

Application

Decoration construction, upholstery, industry instrument etc.

Test

Squash test, extended test, water pressure test, crystal rot test, heat treatment, NDT

Chemical Composition of Material

Material

Composition

201

202

304

316

430

C

≤0.15

≤0.15

≤0.08

≤0.08

≤0.12

Si

≤1.00

≤1.00

≤1.00

≤1.00

≤1.00

Mn

5.5-7.5

7.5-10

≤2.00

≤2.00

≤1.00

P

≤0.06

≤0.06

≤0.045

≤0.045

≤0.040

S

≤0.03

≤0.03

≤0.030

≤0.030

≤0.030

Cr

16-18

17-19

18-20

16-18

16-18

N

3.5-5.5

4-6

8-10.5

10-14

Mo

2.0-3.0

Mechanical Property

Material Item

201

202

304

316

Tensile Strength

≥535

≥520

≥520

≥520

Yield Strength

≥245

≥205

≥205

≥205

Extension

≥30%

≥30%

≥35%

≥35%

Hardness (HV)

<;;253

<;;253

<;;200

<;;200