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Tensile Strength A193 b7 Stud Bolt, ASTM B841-99 Zinc Nickel

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US$ 0.12 - 0.12 MOQ: 10 Pieces
Key Specifications
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Place of Origin:
Shanghai, China
Brand Name:
Genrui
Model Number:
ASTM A 193 B7
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Shanghai Genrui Industry Co., Ltd.
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Place of Origin Shanghai, China
Brand Name Genrui
Model Number ASTM A 193 B7
Standard ANSI

ASTM A193

The ASTM standard covers alloy steel and stainless steel bolting materials for high temperature 

or high pressure service. This specification includes fasteners intended for use in pressure vessels, 

valves, flanges, and fittings. Although, this material is often available in inational coarse (UNC) thread pitches, 

if being used in traditional applications, threads are specified 8 threads per inch (tpi) for diameters 

above one inch.

Below is a basic summary of a few of the common grades. ASTM A193 covers a number of other 

standard specifications not covered in this description including B5, B6, and B16.

A193 Grades

B7

Alloy steel, AISI 4140/4142, quenched and tempered

B8

Class 1 Stainless steel, AISI 304, carbide solution treated.

B8M

Class 1 Stainless steel, AISI 316, carbide solution treated.

B8

Class 2 Stainless steel, AISI 304, carbide solution treated, strain hardened

B8M

Class 2 Stainless steel, AISI 316, carbide solution treated, strain hardened

A193 Mechanical Properties

Grade

Size

Tensile ksi, min

Yield, ksi, min

Elong, %, min

RA % min

B7

Up to 2-1/2

125

105

16

50

2-5/8 - 4

115

95

16

50

4-1/8 - 7

100

75

18

50

B8 Class 1

All

75

30

30

50

B8M Class 1

All

75

30

30

50

B8 Class 2

Up to 3/4

125

100

12

35

7/8 - 1

115

80

15

35

1-1/8 - 1-1/4

105

65

20

35

1-3/8 - 1-1/2

100

50

28

45

B8M Class 2

Up to 3/4

110

95

15

45

7/8 - 1

100

80

20

45

1-1/8 - 1-1/4

95

65

25

45

1-3/8 - 1-1/2

90

50

30

45

A193 Chemical Properties

 

Element

B7 (AISI 4140)

B8 (AISI 304)

B8M (AISI 316)

Carbon

0.37 - 0.49%

0.08% max

0.08% max

Manganese

0.65 - 1.10%

2.00% max

2.00% max

Phosphorus, max

0.035%

0.045%

0.045%

Sulfur, max

0.040%

0.030%

0.030%

Silicon

0.15 - 0.35%

1.00% max

1.00% max

Chromium

0.75 - 1.20%

18.0 - 20.0%

16.0 - 18.0%

Nickel

 

8.0 - 11.0%

10.0 - 14.0%

Molybdenum

0.15 - 0.25%

 

2.00 - 3.00%

A193 Recommended Hardware

Bolt Grade

Nuts

Washers

B7

A194 Grade 2H

F436

B8 Class 1

A194 Grade 8

SS304

B8M Class 1

A194 Grade 8M

SS316

B8 Class 2

A194 Grade 8

SS304

B8M Class 2

A194 Grade 8M

SS316

 

 

tensile strength a193 b7 stud bolt, ASTM B841-99 Zinc Nickeltensile strength a193 b7 stud bolt, ASTM B841-99 Zinc Nickeltensile strength a193 b7 stud bolt, ASTM B841-99 Zinc Nickeltensile strength a193 b7 stud bolt, ASTM B841-99 Zinc Nickeltensile strength a193 b7 stud bolt, ASTM B841-99 Zinc Nickel

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Shanghai Genrui Industry Co., Ltd.
Business Type
Manufacturer, Trading Company
Year Established
2015
Factory Size
3,000-5,000 square meters
Total Employees
51 - 100 People
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