stud bolt Astm A193 GrB7 Stud bolt with ASTM A194 2H nuts or thread rod threaded bar
Basic Info
Model No.: 1/2\"-4\"
Product Description
Specifications
Stud Bolt
Oxid black, Hot dip galvanized, Cad-plated, Blue PTFE Coated(Blue XYLANE 1014,1424),Teflon
Standard | DIN | ANSI/ASME | GB | JIS | NON-STANDARD |
Size | Dia. M5-M100,1/4 above | ||||
Material | Carbon steel, stainless steel, alloy steel | ||||
Grade | 4.8, 8.8, 10.9, 12.9,GR5,GR8,GR10 | ||||
Finish | Plain, Y.Z.P., Black, Z.P.HDG plated,PTFE,CAD PLATED | ||||
Certificate | ISO9001:2008 , TS16949 | ||||
Name | A193 B7 stud |
ASTM A193
Scope
Originally approved in 1936, this specification is heavily utilized in petroleum and chemical construction applications. 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 national 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.
Recommended coating,
Oxid black, Hot dip galvanized, Zinc plated, Cad-plated, Blue TPFE Coated(Blue XYLANE 1014,1424), Green TPFE Coated(Green XYLANE 1014,1424).FEFLON coated
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 |
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 |
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% |
Recommended Nuts and Washers
Bolt Grade | ||
B7 | ||
B8 Class 1 | SS304 | |
B8M Class 1 | SS316 | |
B8 Class 2 | SS304 | |
B8M Class 2 | SS316 |
A193 B7 stud ,certificates IS9001,TS16949
Contact us if you need more details on Stud Bolt. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Stud、A193 B8 Stud. If these products fail to match your need, please contact us and we would like to provide relevant information.
Product Categories : Studs > Other Studs