1.4980-Stud-Bolt-ASTM-A453-grade-660-Hex-Nuts

1.4980 X6NiCrTiMoVB25-15-2 Stud Bolt Hex Nuts

1.4980 Alloy 286 Fasteners Manufacturer

1.4980 is a precipitation-hardenable austenitic stainless steel, commonly known as Alloy A286. It offers an excellent combination of high strength and corrosion resistance, Like ASTM A453 grade 660 stud bolt ,it is often used in high-temperature applications such as aerospace and power generation.

The material 1.4980 is a high-temperature steel. In the anneale condition, the structure austenite an carbides on. In the cured state, the structure is austenitic steels, carbides and intermetallic phases. Shal due the cure hardness and strength increases. This steel can be up to a maximum temperature of about 700 °C / 1292 °F aare used. Typical products from 1.4980 are, for example, connecting parts, wich are used in turbine construction.

Equivalent grade of 1.4980
Material No.1.4980EN DesignationX6NiCrTiMoVB25-15-2AISI/SAE660/ASTM A453 Grade 660UNSS66286
    EN 10302: 2008 Creep resisting steels, nickel and cobalt alloys
    EN 10269: 2013 Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties
    EN 10088-1: 2005 Stainless steels. List of stainless steels

1.4980 Stud Bolts Specification

  • Material: 1.4980 / UNS S66286 / Alloy A286
  • Standard: ASTM A453 Grade 660 (Class A, B, C, D)
  • High tensile and yield strength – ideal for high-pressure bolted joints
  • Excellent oxidation and corrosion resistance up to 700°C (1300°F)
  • Precipitation hardened for added durability
  • Available in metric and imperial thread forms (UNC/UNF/BSP/ISO)
  • Supplied with matching nuts and washers in A286 or equivalent alloys
  • Thread Standards (as applicable):
  • ASME B1.1 for UNC/UNF (imperial) threads
  • ISO 261 / ISO 68-1 / ISO 965-1/–3 for metric threads
  • DIN 975 / DIN 976 (when specifying in a DIN-centric supply chain)
  • Size Range (Diameter × Length)
  • Diameter Range (Nominal):
    • Metric: M6 through M64 (common commercially)
    • Imperial (inch): ¼″ – 4″ (¼″, 5⁄16″, 3⁄8″, 7⁄16″, ½″, 5⁄8″, ¾″, 7⁄8″, 1″, 1 1⁄8″, 1 ¼″, 1 ½″, 1 ¾″, 2″,2 1/2″,3″,3 1/2″,4″)
  • Length Range:Typically 20 mm up to 1000 mm
Coating and Finish Options for 1.4980 stud bolt
  • Plain (uncoated): Mill finish (standard).
  • PTFE (Teflon) Coating: For extra corrosion resistance.Xylan blue coating

Chemical Composition of 1.4980
C %Si %Mn %P %S %Al %B %Cr %Mo %Ni % Ti %V %
0,03 – 0,08max 1,001,00 – 2,00max 0,025max 0,015max 0,35000,0030 – 0,010013,50 – 16,001,00 – 1,5024,00 – 27,001,90 – 2,300,10 – 0,50
1.4980 Stud bolt Mechanical properties at room temperature and at 20 °C of steels in delivery conditions
which support the Essential Safety Requirements of Directive 97/23/EC
Material designationHeat treatment conditionDiameter dProof strength Rp0.2​ min.Tensile strength Rm​Elongation after fracture A min.Reduction in area Z min.Impact energy KV2​ (ISO – V) at 20°C min.
NameNumbermmMPaMPa%%J
X6NiCrTiMoVB25 – 15 – 21.498+AT+Pd≤160600900 to 115015—50
1.4980 Stud bolt Minimum tensile strength values at elevated temperatures of steels in delivery conditions which support the Essential Safety Requirements of Directive 97/23/EC
Material designationHeat treatment conditionDiameter dMinimum tensile strength Rm​ in MPa at a temperature (in °C) of
NameNumbermm50100150200250300350400450500550600650
X6NiCrTiMoVB25 – 15 – 21.498+AT+Pd≤160———————720710700690670—
1.4980 Stud bolt Minimum impact energy (longitudinal direction) at low temperature of steels in delivery conditions which support the Essential Safety
Requirements of Directive 97/23/EC
Material designationHeat treatment conditionDiameter dMinimum impact energy KV2​ in J (ISO-V test piece) at a test temperature in °C of
NameNumbermm-270-196-160-140-120-110-100-90-80-70-60-50-40-20020
X6NiCrTiMoVB25 – 15 – 21.498+AT+Pd≤160—40—————————————50

Steel grade 1.4980 (ASTM A453 Grade 660 )may be ordered for cryogenic purposes with impact values of 50 J at -270 °C, 60 J at -196 °C and 70 J at 20 °C.

Steel grade 1.4980 (ASTM A453 Grade 660 ) Density and static modulus of elasticity
Material designationDensityStatic modulus of elasticity at a temperature in °C of
20100200300400500600700800
NameNumberkg/dm3GPa
X6NiCrTiMoVB25 – 15 – 21.4988211206200192183173162——
Steel grade 1.4980 (ASTM A453 Grade 660 ) Coefficient of thermal expansion, thermal conductivity, thermal capacity and electrical resistivity
Material designationCoefficient of thermal expansion between 20 °C and　　　　　Thermal conductivity at 20 °CSpecific thermal capacity at 20 °CElectrical resistivity at 20 °C
NameNumber100 °C200 °C300 °C400 °C500 °C600 °C　　　
10−6K−1m⋅KW​kg⋅KJ​mΩ⋅mm2​
X6NiCrTiMoVB25 – 15 – 21.4981717.517.81818.218.5134900.91
Guidance for heat treatment of Steel grade 1.4980 in accordance with this European Standard
Material designationHeat-treatmentNormalizing, quenching or solution annealing temperature (°C)Type of coolingTempering or precipitation treatment (and time)<sup>c</sup> (°C)
NameNumber
X6NiCrTiMoVB25 – 15 – 21.498+AT+P970 to 990o, w710 to 730
Strength values for 1 % (plastic) creep strain and creep rupture of Steel grade 1.4980 ASTM A453 grade 660
Material designationTemperature (°C)Strength for 1% (plastic) creep strainCreep rupture strength for
NameNumber10 000 h (MPa)100 000 h (MPa)10 000 h (MPa)100 000 h (MPa)200 000 h (MPa)
X6NiCrTiMoVB25 – 15 – 21.498500580495608545—
510555475590520
520530450570495
530505425550470
540485400525445
550460375500415
560435345475385
570410315450355—
580380280420320
590350250395285
600320220365250
610290195340220
620260170310195—
630235150285170
640210130260150
650190110235132—
How to Specify on Your Purchase Order

A typical line item on a PO or enquiry might look like this:

Item    : Stud Bolt
Material: 1.4980 (Alloy A286, UNS S66286)
Standard: 1.4980 ASTM A453 Grade 660, Class B
Size    : ¾″ – 10 UNC × 5 ½″ (Length overall)
Thread  : Full‐thread; 2A external
Finish  : Plain
Certification: EN 10204 3.1 Mill Test Report + PMI certificate
Quantity: 20 pieces
NACE    : MR0175 compliant

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