ASTM A511

ASTM A511

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Standard: ASTM A511
Material/Steel Grade: MT304, MT304L, MT304H, MT310, MT310S, MT316, MT316L, MT317, MT317L, MT321, MT321H, MT347
Application: Seamless Stainless Steel Mechanical Tubing
Size: OD: 6.0~203.0mm WT: 0.5~25.0mm
Finish: Mill
Shape: rectangular, round, square, oval, U-bend tubing
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Standard: ASTM A511

Material/Steel Grade: MT304, MT304L, MT304H, MT310, MT310S, MT316, MT316L, MT317, MT317L, MT321, MT321H, MT347

Application: Seamless Stainless Steel Mechanical Tubing

Size: OD: 6.0~203.0mm WT: 0.5~25.0mm

Finish: Mill

Shape: rectangular, round, square, oval, U-bend tubing

ASTM A511 Stainless Steel Tube Tolerances Chart


Size
Inches
ODB
Over/
Under, In.
Wall CD Over/
Under %
Cut
Length Inches
OvalityB Double Outside Diameter Tolerance
When Wall Is:
Under 1/2
0.005
15
+1/8 –0
less than 0.015
1/2 to 1-1/2 excl.
0.005
10
+1/8 –0
less than 0.065
1-1/2 to 3-1/2 excl.
0.010
10
+3/16 –0
less than 0.095
3-1/2 to 5-1/2 excl.
0.015
10
+3/16 –0
less than 0.150
5-1/2 to 8 excl.
0.030
10
+3/16 –0
less than 0.240
8 to 8-5/8 excl.
0.045
10
+3/16 –0
less than 0.300


ASTM A511 Stainless Steel Tubing Chemical Composition:

Grade

Carbon

Mn

P

S

Si, max

Ni

Cr

Mo

Ti

Columbium plus Tantalum

Se



max

max

max








MT 302

0.08 to 0.20

2

0.04

0.03

1

8.0–10.0

17.0–19.0

…

…

…

…

MT 303

0.15 max

2

0.2

0.15 min

1

8.0–10.0

17.0–19.0

…

…

…

…

MT 303Se

0.15 max

2

0.04

0.04

1

8.0–11.0

17.0–19.0

…

…

…

0.12–0.2

MT 304

0.08 max

2

0.04

0.03

1

8.0–11.0

18.0–20.0

…

…

…

…

MT 304L

0.035 maxA

2

0.04

0.03

1

8.0–13.0

18.0–20.0

…

…

…

…

MT 305

0.12

2

0.04

0.03

1

10.0–13.0

17.0–19.0

…

…

…

…

MT 309S

0.08 max

2

0.04

0.03

1

12.0–15.0

22.0–24.0

…

…

…

…

MT 310S

0.08 max

2

0.04

0.03

1

19.0–22.0

24.0–26.0

…

…

…

…

MT 316

0.08 max

2

0.04

0.03

1

11.0–14.0

16.0–18.0

2.0–3.0

…

…

…

MT 316L

0.035 maxA

2

0.04

0.03

1

10.0–15.0

16.0–18.0

2.0–3.0

…

…

…

MT 317

0.08 max

2

0.04

0.03

1

11.0–14.0

18.0–20.0

3.0–4.0

…

…

…

MT 321

0.08 max

2

0.04

0.03

1

9.0–13.0

17.0–20.0

…

B

…

…

MT 347

0.08 max

2

0.04

0.03

1

9.0–13.0

17.0–20.0

…

…

C

…



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