ASTM A193 Grade B8 Class 2 Bolts

ASTM A193 Grade B8 Class 2 Bolts

astm-a193-grade-b8-bolts

ASTM A193 Grade B8 is a standard material specification for corrosion 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 properties, hardness, heat-treatment and recommended nuts-washers for Grade B8 Fasteners.

ASTM A193 Grade B8 Class 2 Bolts jolts and strung studs are produced from AISI 304 hardened steel. Type 304 is the most widely recognized review of treated steel utilized in the latch business. Latches produced utilizing this austenitic tempered steel require carbide arrangement treatment on bars to be strung or after the heading activity for jolts with fashioned heads. Carbide arrangement treatment, additionally alluded to as arrangement toughening, is a procedure in which clasp or pure bars are warmed and afterward water-extinguished to guarantee most extreme consumption obstruction.

A193 Grade B8 Class 2 jolts are strain solidified after carbide arrangement treatment to accomplish expanded quality attributes and lessen the potential for irking. Class 2 jolts are stamped "B8SH" with the review image underlined.

ASTM A193 Grade B8 Class 2 Bolts is a standard material determination for consumption safe austenitic hardened steel clasp, for use in high ductile, high temperature and unique reason applications, for example, weight funneling & weight vessels catapulting. Review B8 Class 2 is a carbide-arrangement treated & strain-solidified 304 hardened steel with least malleable prerequisite of 125 ksi, yield 100 ksi and most extreme hardness of 35 HRC. This particular spreads prerequisites for compound structure, mechanical properties, hardness, warm treatment and prescribed nuts-washers for Grade B8 Class 2 Fasteners.

 

ASTM A193 B8 CL2 Bolts Specification

ASTM A193 B8 CL2 Bolt Type ASTM A193 B8 CL2 Anchor Bolt, Carriage Bolt, Flange Bolt, 12 Point Bolt, Hex and Hex Flange Bolts, Hex Head Cap Screw, Place Bolt, Socket Head Cap Screws, Hanger Bolt, Hexagon Bolt / Tap Bolt, Lag Bolt, Machine Bolt, Plow Bolt, Shoulder Bolt, Square Head Bolt, Stud Bolt, T-Head Bolt, Toggle Bolt, U-Bolt
Inch #0000 -3" (customized sizes available)
Metric M1.6 - M48
Length Customized Length
Grade Non Ferrous, 12.9, 10.9, 9.8, 8.8, 5.8, 4.6, B8, 2, 5, 8, L9
Material Brass, Bronze / Copper Base Alloy, Copper, Molybdenum, Steel, Hardened Steel, Stainless Steel, Superalloy (Inconel, 718 Bolts, Hastelloy, Monel), Titanium, Exotic Metals, Other
Method Cold forming, Hot Forging, Wire Forming
Fastener Standards ASME / ANSI, BS, DIN, ISO, JIS, SAE, Other
Application Industries & uses Agriculture, Automotive, Construction and Infrastructure, Energy, Transportation
Testing Methods ASTM E38, E76 and E354, ASTM E53, E54, E62, E75and E478, ASTM E34, E101 and E227, ASTM E 120 and E1409.
Threads Configuration ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads
Thread Diameters M6 to M36
Certification Dual Certified As per ASTM & ASME Codes

 

ASTM Standards Of ASTM A193 B8 CL2 Bolts

ASTM A193 B7 Alloy steel, AISI 4140/4142 quenched and tempered
ASTM A193 B8 Class 1 Stainless steel, AISI 304, carbide solution treated.
ASTM A193 B8 CL2 Class 1 Stainless steel, AISI 316, carbide solution treated.
ASTM A193 B8 Class 2 Stainless steel, AISI 304, carbide solution treated, strain hardened
ASTM A193 B8 CL2 Class 2 Stainless steel, AISI 316, carbide solution treated, strain hardened

 

ASTM A193 B8 CL2 Bolts Characteristics

Grade Description Diameter Tensile Strength, min. Yield Strength, min. Hardness, max. Marking
ASTM A193 B7 Chromium-Molybdenum 2 1/2” and under 125 105 321 HB or 35 HRC B8
over 2 1/2” to 4” 115 95 321 HB or 35 HRC
over 4” to 7” 100 75 321 HB or 35 HRC
ASTM A193 B8 CL2 class 1 S30400 (304) all 75 30 223 HB or 96 HRB B8
ASTM A193 B8 CL2 B8 CL2 class 2 S30400 (304) 3/4” and under 125 100 321 HB or 35 HRC B8SH
over 3/4” to 1” 115 80 321 HB or 35 HRC
over 1” to 1 1/4” 105 65 321 HB or 35 HRC
over 1 1/4” to 1 1/2” 100 50 321 HB or 35 HRC
ASTM A193 B8 CL2 class 1 S31600 (316) all 75 30 223 HB or 96 HRB B8 CL2
ASTM A193 B8 CL2 class 2 S31600 (316) 3/4” and under 110 95 321 HB or 35 HRC B8 CL2SH
over 3/4” to 1” 100 80 321 HB or 35 HRC
over 1” to 1 1/4” 95 65 321 HB or 35 HRC
over 1 1/4” to 1 1/2” 90 50 321 HB or 35 HRC

 

Available ASTM A193 B8 CL2 Bolts Other Types

  • ASTM A193 B8 CL2 Bolts
  • ASTM A193 B8 CL2 Non Ferrous Bolts
  • ASTM A193 B8 CL2 Hex Bolts Stockist
  • ASTM A193 B8 CL2 Hex Head Bolts Supplier
  • ASTM A193 B8 CL2 Square Bolts
  • ASTM A193 B8 CL2 Bolts Exporter
  • ASTM SA193 B8 CL2 Screws Dealer
  • A193 B8 CL2 Hex Cap Screws Exporter
  • ASTM A193 B8 CL2 Studs Supplier
  • ASTM A193 B8 CL2 Socket Head Cap Screws Supplier
  • ASTM A193 B8 CL2 Bolts Manufacturer
  • ASTM A193 B8 CL2 Threaded Rods Exporter
  • ASTM A193 B8 CL2 Heavy Hex Bolts Distributor
  • ASTM A193 B8 CL2 Bolts Stockholder
  • A193 B8 CL2 Hexagon Bolts
  • ASTM A193 B8 CL2 Hex Head Bolts Stockist
  • ASTM A193 B8 CL2 Screws
  • A193 B8 CL2 Hexagon Head Screw Manufacturer in India
  • ASTM A193 B8 CL2 Hexagon Head Cap Bolts
  • ASTM A193 B8 CL2 Studs

 

Chemical Composition

Carbon Manganese, max Phosphorus, max Sulfur, max Silicon Chromium
0.08 2.00 0.045 0.030 1.00 18.0-20.0

 

Raw Material Description

Grade Tensile Class Raw Material Description
B8 Class 2 AISI 304 Stainless Steel, Carbide Solution Treated and Strain Hardened

 

Mechanical Properties

Grade Diameter Tensile Strength Yield Strength Elongation Reduction Hardness
Grade B8, B8M, Class 1, 1D All Diameters 515 205 30 50 223 HBW or 96 HRB
Grade B8, B8C, B8T, Class 2 M20 and under 860 690 12 35 321 HBW or 35 HRC
Grade B8, B8C, B8T, Class 2 M20 to M24, inclusive 690 550 20 45 321 HBW or 35 HRC
Grade B8, B8C, B8T, Class 2 M24 to M30, inclusive 655 450 25 45 321 HBW or 35 HRC
Grade B8, B8C, B8T, Class 2 M30 to M36, inclusive 620 345 30 45 321 HBW or 35 HRC
Grade B8, B8M2, Class 2B M48 and under 655 515 25 40 321 HBW or 35 HRC
Grade B8, B8M2, Class 2B M48 to M64, inclusive 620 450 30 40 321 HBW or 35 HRC
Grade B8, B8M2, Class 2B M64 to M72, inclusive 550 380 30 40 321 HBW or 35 HRC

 

ASTM A193 B8 CL2 Bolts Industrial Applications

»   ASTM A193 B8 CL2 Bolts uses in Aircraft Exhaust Manifolds
»  ASTM A193 B8 CL2 Bolts uses in Off-Shore Oil Drilling Companies
»  ASTM A193 B8 CL2 Bolts uses in Power Generation
»  ASTM A193 B8 CL2 Bolts uses in Petrochemicals
»  ASTM A193 B8 CL2 Bolts uses in Gas Processing
»  ASTM A193 B8 CL2 Bolts uses in Specialty Chemicals
»  ASTM A193 B8 CL2 Bolts uses in Pharmaceuticals
»  ASTM A193 B8 CL2 Bolts uses in Pharmaceutical Equipment
»  ASTM A193 B8 CL2 Bolts uses in Spiral Welded tube for burner pipes and flues
»  ASTM A193 B8 CL2 Bolts uses in Sea Water Equipment
»  ASTM A193 B8 CL2 Bolts uses in Heat Exchangers

 

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ASTM A193 Grade B8 Class 2 Bolts
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