Stud bolts

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Stud bolts

[ AREAS-706 ]

A 193 A193M B7 with two ASTM A194 2H nuts

DIN, ASTM, JIS, BS, ISO, AS/NZS

ASTM A193 This specification covers alloy steel and stainless steel bolting material for pressure vessels, valves, flanges, and fittings for high temperature or high pressure service, or other special purpose applications

IV. Surface Treatments

    1. Plating 

      • Zinc (White / Yellow / Black)

      • Cadmium (White / Yellow / Black)

      • Zinc Nickel

    1. Galvanising 

      • Hot-Dipped Galvanise

      • Mechanical Galvanise

    1. Fluorocarbon Coating

      Xylan® / Dupont Coating Systems: 

      • Xylar 2

      • Xylan 1070

      • Xylan 1424

  1. Customised Coating Systems 

    • Zinc + Fluorocarbon / PTFE coated stud bolt

    • Cadmium + Fluorocarbon /PTFE coated stud bolt

    • Zinc Nickel + Fluorocarbon /PTFE coated stud bolt

    • Zinc Plating + Xylan 1424 Blue PTFE coated stud bolt

    • Xylar 2 + Xylan 1070 coated stud bolt

B7Alloy steel, AISI 4140/4142 quenched and tempered
B8Class 1 Stainless steel, AISI 304, carbide solution treated.
B8MClass 1 Stainless steel, AISI 316, carbide solution treated.
B8Class 2 Stainless steel, AISI 304, carbide solution treated, strain hardened
B8MClass 2 Stainless steel, AISI 316, carbide solution treated, strain hardened
B16A heat-treated chromium-molybdenum-vanadium steel for high-pressure, high-temperature service.


Mechanical Properties Bolt -Grade Identification Markings

GradeSizeTensile ksi, minYield, ksi, minElong, %, minRA % min
B7Up to 2-1/21251051650
2-5/8 – 4115951650
4-1/8 – 7100751850
B8 Class 1All75303050
B8M Class 1All75303050
B8 Class 2Up to 3/41251001235
7/8 – 1115801535
1-1/8 – 1-1/4105652035
1-3/8 – 1-1/2100502845
B8M Class 2Up to 3/4110951545
7/8 – 1100802045
1-1/8 – 1-1/495652545
1-3/8 – 1-1/290503045
B16Up to 2-1/21251051850
2-5/8 – 4110951745
4-1/8 – 7100851645

Material Chemical Composition

ElementA193 B7 (AISI 4140)B8 (AISI 304)B8M (AISI 316)B16 (AISI 4140)
Carbon0.37 – 0.49%0.08% max0.08% max0.37 – 0.49%
Manganese0.65 – 1.10%2.00% max2.00% max0.65 – 1.10%
Phosphorus, max0.035%0.045%0.045%0.035%
Sulfur, max0.040%0.030%0.030%0.040%
Silicon0.15 – 0.35%1.00% max1.00% max0.15 – 0.35%
Chromium0.75 – 1.20%18.0 – 20.0%16.0 – 18.0%0.75 – 1.20%
Nickel8.0 – 11.0%10.0 – 14.0%
Molybdenum0.15 – 0.25%2.00 – 3.00%0.15 – 0.25%

Recommended Nuts,Bolts & Washer

Bolt GradeNutsWashers
B7A194 Grade 2HF436
B8 Class 1A194 Grade 8SS304
B8M Class 1A194 Grade 8MSS316
B8 Class 2A194 Grade 8SS304
B8M Class 2A194 Grade 8MSS316


CÔNG TY TRÁCH NHIỆM HỮU HẠN ĐỨC KHANH
MST: 3500765411 (Do Sở KHĐT Tỉnh Bà Rịa - Vũng Tàu cấp ngày: 25/09/2006) - ĐDP: Phùng Công Đức
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