Call Us : +91-9022702227 info@aanuraj.com

ASTM A453 GR. 660 CLASS A B C D Studs Bolts Nuts Specification:

           Material for construction: UNS 66286/ Alloy A286 ,

A286 bolting for High Temperature applications.

ASTM A453 GR. 660 CLASS A B C D Studs Bolts Nuts Specification Pdf Download:

ASTM A453 Gr. 660 Fasteners: Chemical and Mechanical Properties

 

Standard ASTM A453 Gr. 660
Class A, B, C & D
Material of Construction (MOC) UNS 66286 / Alloy A286
Dimensions ASME B18.2.1, ASME B18.3
Threads (Inches) ASME B1.1 2A/3A Unified Threads
Threads (Metrics) B1.13M 6h Coarse Threads
Additional Requirements NACE MR0103/MR0175/ISO 15156 Compliance
Mandatory Requirements Free from Mercury & Radioactive Contamination

Chemical Composition

Chemical Elements Min. % Max. %
Carbon (C) – 0.08
Manganese (Mn) – 2.00
Phosphorus (P) – 0.040
Sulfur (S) – 0.030
Silicon (Si) – 1.000
Nickel (Ni) 24.00 27.00
Chromium (Cr) 13.5 16.00
Molybdenum (Mo) 1.00 1.50
Titanium (Ti) 1.90 2.35
Aluminum (Al) – 0.35
Vanadium (V) 0.10 0.50
Boron (B) 0.001 0.010

Mechanical Properties

Grade Grade 660 Grade 660
Class A, B, C D
Tensile Strength 130 ksi / 895 MPa 130 ksi / 895 MPa
Yield Strength 85 ksi / 585 MPa 105 ksi / 725 MPa
Elongation % 15 min % 15 min %
Reduction of Area % 18 min % 18 min %
Brinell Hardness 248-341 248-341
Rockwell Hardness 24-37 HRC 24-35 HRC

Stress Rupture Test Requirements

Grade Class Test Temp. (°F) Test Temp. (°C) Stress Min. (ksi) Stress Min. (MPa) Time to Rupture (Min. Hr.) Elongation Min. %
Gr. 660 A, B, C 1200 650 56 385 100 5