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ASTM A193 A320 Stainless Steel B8 B8M Heavy Hex Bolt for Structural Fasteners

Ningbo YokeLink Machinery Co., Limited
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ASTM A193 A320 Stainless Steel B8 B8M Heavy Hex Bolt for Structural Fasteners

Brand Name : Yokelink

Model Number : OEM

Place of Origin : Zhejiang,China

MOQ : 1000pcs

Price : $0.1-$1.0

Payment Terms : L/C, T/T

Supply Ability : 10000pcs per month

Delivery Time : 35-40days

Packaging Details : Carton & Pallet

Material : Stainless Steel

Application : Machinery, Building

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ASTM A193 Grade B8 Heavy Hex Bolt
Yokelink ASTM A193 Grade B8 is a standard material specification for corosion resistant austenitic stainless steel fasteners, for use in high tensile high temperature and special purpose applications such as pressure piping & pressure vessels bolting. Grade B8 is a heat-treated, work hardened (or both) austenitic stainless steel further divided into class 1, class 2 & class 2B, each having a distinguished tensile strength ASTM A193 specification covers requirements for chemical composition, mechanical properies, hardness, heat-treatment and recommended nuts-washers for Grade B8 Fasteners.
ASTM A193 A320 Stainless Steel B8 B8M Heavy Hex Bolt for Structural Fasteners ASTM A193 A320 Stainless Steel B8 B8M Heavy Hex Bolt for Structural Fasteners

A 193 B8 Heavy Hex Bolt Materials and Chemical Composition

Basic material: AISI 304 or 304L stainless steel (corresponding to UNS S30400/S30403), belonging to 18-8 type austenitic stainless steel 138.
Chemical composition:
ASTM A193 A320 Stainless Steel B8 B8M Heavy Hex Bolt for Structural Fasteners

A 193 B8 Heavy Hex Bolt Heat treatment and mechanical properties

Heat treatment process:

Solution annealing (Carbide Solution Treatment): Heating to 1100-1200°C and then cooling rapidly (such as water quenching) to dissolve carbides to improve corrosion resistance18.
Strain hardening (Strain Hardening): Class 2 and 2B increase strength through cold working or cold deformation to reduce the risk of bonding158.
ASTM A193 A320 Stainless Steel B8 B8M Heavy Hex Bolt for Structural Fasteners ASTM A193 A320 Stainless Steel B8 B8M Heavy Hex Bolt for Structural Fasteners

Mechanical property classification:

Class 1: Solution treatment only, tensile strength ≥75 ksi (515 MPa), yield strength ≥30 ksi (205 MPa), hardness ≤223 HBW38.
Class 2: Solution + strain hardening, tensile strength 125 ksi (860 MPa, diameter ≤3/4 inch), yield strength 100 ksi (690 MPa), hardness ≤321 HBW358.
Class 2B: For larger diameters (e.g., ≤ 2 inches), the tensile strength is gradually reduced to 80 ksi (550 MPa), but the toughness is maintained at a high level8.

A 193 B8 Heavy Hex Bolt Product form and specifications

Type: covers bolts, studs, nuts, threaded rods, hexagonal head bolts, etc., supporting metric (M10-M110) and imperial (1/2"-4") sizes17.
Thread standards: including UNC, UNF, BSW, NPT, etc., to meet different connection requirements17.
Surface treatment: optional galvanizing, Dacromet, PTFE coating, passivation, etc., to enhance corrosion resistance or adaptability to specific environments
ASTM A193 A320 Stainless Steel B8 B8M Heavy Hex Bolt for Structural Fasteners

Buy A 193 B8 Heavy Hex Bolt From Yokelink

ASTM A193 A320 Stainless Steel B8 B8M Heavy Hex Bolt for Structural Fasteners
Yokelink as a trusted fastening solution expert in the global industrial field, we focus on precision manufacturing and innovative technology to create high-performance fastener products that are suitable for all scenarios. From high-temperature and high-pressure petrochemical plants to deep-sea energy platforms, from precision medical equipment to new energy infrastructure, our products are represented by the ASTM A193 B8 series, covering Class 1 (standard corrosion resistance), Class 2 (high-strength hardening) and Class 2B (super-large specification toughness optimization) grades, meeting the requirements of extreme working conditions from -200°C to 800°C.
Relying on the ISO 9001 quality system and full-process testing (hardness, tensile, salt spray testing), every bolt and nut is precisely up to standard. Supporting metric/imperial specifications, non-standard customization, and 72-hour fast delivery, we provide global customers with the peace of mind of "zero-hazard connection".

China ASTM A193 A320 Stainless Steel B8 B8M Heavy Hex Bolt for Structural Fasteners wholesale

ASTM A193 A320 Stainless Steel B8 B8M Heavy Hex Bolt for Structural Fasteners Images

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