ASTM A453 Grade 660 Class A Bolts

ASTM A453 Grade 660 Class A Bolts

ASTM A453 Grade 660 Class A BoltsASTM A453 Grade 660 Class A Bolts are manufactured from Stainless Steel Alloy A286 and heat treated to achieve minimum tensile requirement of 895 MPa and yield of 585 MPa and Brinell hardness between 248 to 341 BHN. Boltport Fastener is a manufacturer and supplier of ASTM A453 Grade 660 Class A Bolts in India. ASTM A453 Gr 660 class a is a material specification for high tensile stainless steel bolts, intended for high temperature service. We produce stud-bolts, hex bolts, heavy hex bolts, allen head bolts, push bolts, custom bolts and fasteners in ASTM A453 gr 660 cl a material. ASTM A453/A453M specifies both imperial and metric fasteners in grade 660.

Grade 660 Class A bolts are used in bolting boilers, pressure vessels, pipe flanges and valves with high temperature service. Boltport can supply ASTM A453 Grade 660 Class A Bolts with NACE compliance.

Find more information on ASTM a453 grade 660 class a mechanical properties, heat treatment, stress rupture properties and available products in class A.

For Quick quotation on A453 Grade 660 class A Bolts please send us enquiry on info@boltport.com

ASTM A453 Grade 660 Chemical Composition (Incoloy® Alloy A286 / ASTM A638 UNS S66286)

Elements Range Product Variation, Over or UnderB
Carbon 0.08 max % 0.01 over
Manganese 2.00 max % 0.04
Phosphorus 0.040 max % 0.005 over
Sulfur 0.030 max % 0.005 over
Silicon 1.00 max % 0.05
Nickel 24.0 - 27.0 % 0.20
Chromium 13.5 - 16.00 % 0.20
Molybdenum 1.00 - 1.50 0.05
Tungsten ... ...
Tantalum 1.90 - 2.35 % 0.05
ColumbiumA ... ...
Aluminum 0.35 max % 0.05 over
Vanadium 0.10 - 0.50 % 0.03
Boron 0.001 - 0.010 % 0.0004 under to 0.0001 over
Copper ... 0.15

ASTM A453 Grade 660 Class A Heat Treatment

Grade Class Solutions Treatment Hardening Treatment
660 A 1650±25°F[900±14°C], hold 2h, min, and liquid quench 1325±25°F[720±14°C], hold 16h, air cool

ASTM A453 Grade 660 Class A Mechanical Properties

Grade Class Tensile Strength Yield Strength Elongation
in 4D, min, %
Reduction
of Area, min, %
Brinell
Hardness
Number
Approximate
Rockwell
Hardness, B & C
    Ksi Mpa Ksi Mpa       min max
Grade 660 A 130 895 85 585 15 18 248-341 24 HRC 37 HRC

A Material sizes 3 in, [76 mm] and under in diameter.
B Material sizes over 3 in, [76 mm] in diameter.
C Conversation numbers taken from specification A 193/A 193M

ASTM A453 Grade 660 Class A Stress Rupture Requirement

Grade Class Test Temperature Stress, Min Time to Rupture, min, hA Elongation, min, %
    °F °C Ksi Mpa    
Grade 660 A 1200 650 56 385 100 5
ASTM A453 Grade 660 Stud Bolts

ASTM A453 Grade 660 Class A Products


Fastener Coatings

Grade 660 Product Dimensions