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ASTM A193 Grade B8M Class 1 Bolts

astm-a193-grade-B8m-BoltsA193 Grade B8M Class 1 Bolts are manufactured from AISI 316 Stainless Steel carbide solution treated. We manufacture these Bolts with great precision & Quality. These SA 193 B8M Bolts are also noted as B8M Bolts. We at TorqBolt Stock & Supply these Bolt Fasteners in various sizes & Coatings.

For quick Quote on A193 Grade B8M Bolts/Studs, please contact our Sales team.

Related Keywords for ASTM A193 Grade B8 Class 2 Bolts : A193 B8M,Astm A93 grade B8M,A193 B8M Class 2,Astm A193 B8M,B8M Bolts,B8M Studs,Grade B8M,B8M Stainless,Astm A193 Grade B8M Stud Bolts etc

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
B16 A heat-treated chromium-molybdenum-vanadium steel for high-pressure, high-temperature service.

 

Mechanical Properties
Bolt -Grade Identification Markings

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
B16 Up to 2-1/2 125 105 18 50
2-5/8 - 4 110 95 17 45
4-1/8 - 7 100 85 16 45

 

Material Chemical Composition

Element B7 (AISI 4140) B8 (AISI 304) B8M (AISI 316) B16 (AISI 4140)
Carbon 0.37 - 0.49% 0.08% max 0.08% max 0.37 - 0.49%
Manganese 0.65 - 1.10% 2.00% max 2.00% max 0.65 - 1.10%
Phosphorus, max 0.035% 0.045% 0.045% 0.035%
Sulfur, max 0.040% 0.030% 0.030% 0.040%
Silicon 0.15 - 0.35% 1.00% max 1.00% max 0.15 - 0.35%
Chromium 0.75 - 1.20% 18.0 - 20.0% 16.0 - 18.0% 0.75 - 1.20%
Nickel 8.0 - 11.0% 10.0 - 14.0%
Molybdenum 0.15 - 0.25% 2.00 - 3.00% 0.15 - 0.25%

 

Recommended Nuts,Bolts & Washer

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

 

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