A193 B8M Stud Bolt and A194 8M Hex Nuts

We are a professional manufacturer of A193 B8M Stud Bolt and A194 8M Hex Nuts in China

ASTM A193 is a standard that covers alloy steel and stainless steel threaded fasteners designed to meet the demands of high temperature and high pressure services.

B8M is a specific stainless steel material grade specified within the ASTM A193 standard

B8M: This designation signifies that the material is stainless steel. Specifically, it indicates a type of stainless steel known as AISI 316 stainless steel.

AISI 316 stainless steel is a molybdenum-bearing austenitic stainless steel with improved corrosion resistance compared to AISI 304 stainless steel, especially in chloride environments. It contains chromium, nickel, and molybdenum, making it highly resistant to corrosion and oxidation.

ASME B18.2.1 Stud Bolt &ASME B18.2.2 hex  nuts

We also supply A193 B8 Stud bolts and A194 Gr 8 Hex nuts
Both grade can be PTFE COATED
XYLAN/PTFE COATED A193 B8 Stud bolts and A194 Gr 8 Hex nuts
XYLAN/PTFE COATED A193 B8M Stud bolts and A194 Gr 8M Hex nuts
ASTM A193 B8M Stud BoltsASTM A193 B8M Hex Bolt,ss316 hex bolt

Type: Stud Bolts and Nuts.
Material: A193 B8M Stud Bolt and A194 8M Hex Nuts

A193 B8M Hex Bolt and A194 8M Hex Nuts
Standard: ASME B18.2.1, ASME B18.2.2.

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

A193 B8M Stud Bolt 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%

A193 B8M Stud Bolt 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

How to order our A193 B8M Stud Bolts?

EXAMPLE#1,

STUD BOLT , 3/4 X 145 LG ,W/2 HVY HEX NUT;  (IMP SIZE X METRIC LG); SS ASTM A193 GR A193 B8M CL 2/ASTM A194 GR 8MA

Quantity: 120 Each

Categories: Stud Bolt