• Download PDF
    Standard
  •   0091-22-66157017
  •   info@torqbolt.com
    • Home

    ASTM A453 Grade 660

    Specification

    ASTM A453 Specification describes detailed requirements of grade 660 in class A,B,C & D. A453 Specification covers grade 660 bolting material with two classes of yield strength viz. 85 ksi & 100 ksi [585 & 725 MPa] respectively for use in high temperature service for bolting components such as bolts, screws, nuts, stud bolts & various other fasteners for pressure vessel and valve flanges. A453 Grade 660 is typically known as alloy a286 with various trade names and specifications equivalent to UNS S66286. A453 Grade 660 material is produced in various other forms like wire rods, round bars, shafts, castings, forgings, threaded bars, threaded rods, wires, tubings, sheets, plates, welding rods, hex bars, Rivets & Springs. A453 Class A,B & C Bolting intended for high temperature use are stress rupture tested for 100 Hours at 650°C in finished condition. A453 Grade 660D Bolting are typically produced in double aged condition meeting NACE MR 0175 requirement of hardness 35 HRC Max in accordance with API 20F BSL2 & BSL3. Additionally Class D Bolting are charpy impact tested -196°C with 40 joules as the minimum qualifying requirement.

    ASTM A453 Grade 660 Temperature Rating

    Physical Property Intermittent Usage / Short Term Continuous Operation
    Fahrenheit(°F) Celsius(°C) Fahrenheit(°F) Celsius(°C)
    Oxidation Resistance 1500(°F) 815(°C) 1800(°F) 982(°C)
    High Strength Retention 1300-1500(°F) 704-815(°C) -320 upto 1000(°F) -160 upto 537(°C)

    Characteristics of A453 Grade 660

    • Good Machinability
    • Excellent fabrication characteristics
    • Good oxidation resistance up to 800°C
    • Can be produced by AOD refining or VIM
    • Good creep-rupture strength during extended high-temperature exposure
    • Non-magnetic even after severe cold deformation
    • High ductility in notched sections
    • Very high corrosion resistance
    • Good for moderate corrosion applications in aqueous solutions
    • High mechanical properties due to age hardenability
    • High strengths that are well retained up to 700°C

    ASTM A453 Grade 660 Class

    Based on the Heat Treatment Condition

    ASTM A453 Grade 660 Material Equivalents

    • ASTM - A638, F2281
    • ASME - SA453, SA638, SF2281
    • UNS - S66286; K66286
    • EN-10083-3; EN 10302; 10269
    • WerkStoff - 1.4980 / 1.4944
    • AMS - 5737/5732/5525/5804
    • ISO - 3506-5
    • DIN 267 / X4NiCrTi25-15 / X5NiCrTi26-15
    • SAE - J467 A286
    • SUH - 660
    • Steel No. - X6NiCrTiMoVB25-15-2 / X6NiCrTiMoV26-15
    • VdTUV - Werkstoffblatt 435
    • AFNOR - Z5NCTDV26-15B / Z6NCTDV25-15
    • GB/T - 06Cr15Ni25Ti2MoAlVB

    ASTM A453 Grade 660 Dimensional Standards

    Bolts DIN ISO BS ASME IS UNI NFE
    Metric Imperial
    Hex Bolts 931 4014 / 4016 / 4017 / 8765 1083 / 3692 B18.2.3.10M / B18.2.3.5M B18.2.1 12427 / 1363 PART 1 / 1363 PART 2 / 1364 / 6639 - -
    Heavy Hex Bolts 6914     B18.2.3.6M / B18.2.3.7M / B18.2.6M B18.2.1   - -
    Hex Flange Bolts 6921 / 6921 15071 / 4162 / 8100 / 8102       15582 - -
    Hexagon Nuts 6330 / 936 / 2510 / 555 4032 / 8673 / 4034 4190 B18.2.4.1M - 1363 / 1364 82144 -
    Hexagon Full Nuts 934 / 934 4032 / 8673 - - - - - -
    Hexagon Thin Nuts 439 / 439 / 439 4035 / 8675 / 10511 4190 - - - - -
    Flat Washers 125 / 125A / 125B / 433 / 7349 / 7989 / 9021 7089 / 7090 / 7091 / 7092 / 7093-1 / 7094 / 8738 4320 / 4320 B18.22M B18.22.1 / B18.22.1 - - 25-514 / 25-514 / 25-514 / 25-514
    Full Thread Studs - - - B16.5 B16.5 - - -
    Continuous Thread Stud Bolts - - - B18.31.1M B18.31.2 - - -
    Plain End Stud Bolts 975 / 976 - - - - - - -
    Double End Stud Bolts 938 / 939 / 940 / 949 / 835 / 2510 / 2509 - 2693 / 3692 / 4439 - - 1862 - -
    Flat Countersunk Head Machine Screws - - - - B18.6.3 / B18.6.3 - - -
    Hex Cap Screws - - - B18.2.3.1M B18.2.1 - - -
    Socket Cap Screws 912 / 912 4762 2470 B18.3.1M - - - -

    ASTM A453 Grade 660 Class A/B/C/D Product Range

    Based on the application & Usage

    ASTM A453 Grade 660 Bars / Rods

    Bars / Rods

    ASTM A453 Grade 660 Forgings

    Forgings

    ASTM A453 Grade 660 Heavy Hex Nuts

    Heavy Hex Nuts

    ASTM A453 Grade 660 Bolts

    Bolts

    ASTM A453 Grade 660 Hex Bolts

    Hex Bolts

    ASTM A453 Grade 660 Heavy Hex Bolt

    Heavy Hex Bolt

    ASTM A453 Grade 660 Socket Head Cap Screws

    Socket Head Cap Screws

    ASTM A453 Grade 660 Push Bolts / Rods

    Push Bolts / Rods

    ASTM A453 Grade 660 Hex Cap Screws

    Hex Cap Screws

    ASTM A453 Grade 660 Set Screws / Grub Screws

    Set Screws / Grub Screws

    ASTM A453 Grade 660 Washers

    Washers

    ASTM A453 Grade 660 Countersunk Screws

    Countersunk Screws

    ASTM A453 Grade 660 U Bolt

    U Bolt

    ASTM A453 Grade 660 Class D Api 6a Full Thread Stud Bolt

    All Thread Studs

    ASTM A453 Grade 660 Class D Api 6a Tap End Stud Bolt

    Stud Bolts

    ASTM A453 Grade 660 Class B 12 point screws

    12 point screws

    Specifications
    • ASTM A453
    • ASTM A638
    • EN 10269
    • EN 10083-3
    • ISO 3506-5
    • DIN 267
    Surface Treatments
    • Xylan 1070 / 1014 / 1400 / 1424
    • Xylar 2 / 101
    • SermaGard 1105 / 1280
    • Dacromet 320 / 500
    • TakeCoat 1000 Ceramic
    • Magnigard
    • MolyKote
    Certifications
    • ISO 9001 - 2015 Certified
    • PED 2014/68/EC
    • NACE MR0175/ISO 15156-2
    • NORSOK M-650
    • DFAR
    • MERKBLATT AD 2000 W2/W7/W10
    About Us
    Questions? Contact us.
    Showcase of our Microsites.
    Satisfaction Survey

    survey

    TUVRheinland CRETIFIED

    © 2024 TorqBolt P(Ltd) · Built with in INDIA.