Name

Stainless steel welded pipes/ tubes

Standard

ASTM A554, A249, A269, A270, A312

Material Grade

201,202,304,316L,430

Main Material

201: Ni 0.8%-1%

202: Ni 3.5%-4.5%

304: Ni 8%, Cr 18%

316: Ni 10%, Cr 18%

316L: Ni 10%-14%

430: Cr 16%-18%

Outer diameter

8mm-76.2mm

Thickness

0.5mm-1.5mm

Length

6m or customized

Application

Handrail, railing, staircase, weld mesh screen, door, window, balcony, fence, bench, furniture, etc.

Test

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

Chemical Composition of Material

Material Composition

201

202

304

316L

430

C

≤0.15

≤0.15

≤0.08

≤0.035

≤0.12

Si

≤1

≤1

≤1

≤1

≤1

Mn

5.5-7.5

7.5-10

≤2

≤2

≤1

P

≤0.06

≤0.06

≤0.045

≤0.045

≤0.04

S

≤0.03

≤0.03

≤0.03

≤0.03

≤0.03

Cr

13-15

14-17

18-20

16-18

16-18

Ni

0.7-1.1

3.5-4.5

8-10.5

10-14

Mo

2.0-3.0

Mechanical Property

Material Item

201

202

304

430

Tensile Strength

≥535

≥520

≥520

≥520

Yield Strength

≥245

≥205

≥205

≥205

Extension

≥30%

≥30%

≥35%

≥35%

Hardness(HV)

≤105

≤100

≤90

≤90