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ASTM A511

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ASTM A511

ASTM A511 pipe is a specification for mechanical applications with high corrosion resistance. ASTM A511 stainless steel pipe is a seamless pipe with higher dimensional accuracy. Different grades of materials are used in this series of tubes. There are also different types of pipes, such as ASTM A511 seamless stainless steel mechanical pipes and hollow rods for different applications. The material grade ranges from MT 302, 303, 304, 305 to MT347. All these grades contain manganese, phosphorus, sulfur, silicon, nickel, and chromium.

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: 6.0~50.8mm WT: 0.8~10.0mm

Finish: Mill

ASTM A511 Tolerances

Stainless Steel ASTM A511 Seamless Tube supplier in China for Mechanical Applications

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

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

Ss Mill, Stainless Plant, Stainless Mill

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