ASTM A193 Fasteners - ASTM A194 Alloy Steel Fasteners Nut Bolts Suppliers India

Material Grades ASTM A193 - A194 Fasteners Manufacturer India

Material Grades ASTM A193 - ASTM A194 Alloy Steel Fasteners Nut Bolts Manufacturer / Suppliers Mumbai

All Grades ( Bolts in ASTM A193 and Nuts in ASTM A194) Grade B7, B16, B8, B8M, B8, B8M Dealers & Distributors Maharashtra.

Alloy Steel Fasteners, Bolts, Nuts, Screws, Threaded Rod, Dowel Pin, Stud Bolt, Full thread stud, Hex Bolts, Hex Head Bolts, Flange Bolts Stockist - Stockholder India.

Global Stainless is biggest stock Holder of differents types of Bolts in ASTM A193 and Nuts in ASTM A194 and more on. Get huge amount stock of Prime quality & High Alloy Steel Fasteners , at best price. We are one of most trusted Distributors, Traders & Wholesaler of Alloy Steel Bolts & Nuts. You can contact on +91-22- 2385 7766 or Send Mail: info@globalstainless.co.in . We Will Be happy to Assist you. We offer high Alloy Steel Fasteners at affordable price. We have stock of Alloy Steel Bolts & Nuts Around the 500 ton.

Specification :
Standard : ASTM / ASME A/SA 193 / 194 GR
Size : "¼ to 4”
Length : UPTO 5 METERS
Grade : B 6, B 7/ B 7M, B 16, 2, 2HM, 2H, GR 6, B 7, B 7M
Specification : IS, BS, ASTM
Type : Bolts, nuts, Washers, Anchor Fasteners, Stud Bolts, Eye Bolt, Stud, Threaded Rod, Cotter Pin, Socket Screw, Fine Fasteners & Spares, Foundation Fasteners, etc.

 

Materials -Bolts in ASTM A193 and Nuts in ASTM A194 (All Grades)

Scope

ASTM A193 is the standard specification for alloy-steel and stainless steel bolts used in high-temperature or high-pressure environments or other special-purpose applications.  ASTM A194 is the standard specification for carbon and alloy steel nuts for bolts used in equivalent high-pressure or high-temperature environments. ASTM A193 and A194 bolts and nuts from Global Stainless are available in a range of grades, including B7, B16 B8 and B8M to meet different design, service conditions, mechanical properties, and high temperature requirements. ASTM A194 also covers the American Association State Highway and Transportation Officials Standard AASHTO M-292.

These bolts and nuts are designed, manufactured and tested to comply with the standards set by ASTM A193 and A194 for chemical composition, tensile and hardness properties and high temperature characteristics.

Grades

Grade

Material

B7

Alloy steel, AISI 4140/4142 quenched and tempered

B16

Alloy steel, Chromium-molybdenum-vanadium heat treated

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

B7, B8 and B8M are the most commonly used grades. The properties tables below provide more information on the differences between the grades.

Applications

The high-temperature, high-pressure performance of these bolts and nuts make them suitable for applications in process industries, such as petroleum and chemicals where they are widely used in pressure vessels, valves, flanges, and fittings.

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

 

Up to 2-1/2

125

105

18

50

B16

2-5/8 - 4

110

95

17

45

 

4-1/8 - 7

100

85

16

45

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

Element

B7

B8

B8M

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%

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