ASTM A 453 662 A Stud Bolt Thread Rod

China manufacturer of ASTM A 453 662 A Stud Bolt Thread Rod

Grade 662, which provides enhanced mechanical properties and corrosion resistance.

It requires UNS S66286 to be in the solution annealed and aged or solution annealed and double-aged condition with a maximum hardness of 35 HRC.

AISI 622 / UNS S66220

Grade Grade 662
USA UNS S66220
 Standard ASTM A453/453M
High-temperature bolting, with expansion coefficients comparable to austenitic stainless steels

ASTM A453 Grade 662 Stud bolt Specifications

Parameter Details
Material Grade ASTM A453 Grade 662 class A
Thread Type UNC (coarse) or Metric thread
Size Range 1/4″ to 4″ (M6 to M100 metric)
Length Range Standard and custom lengths
Finish Plain (uncoated) or PTFE coated
Nuts Heavy hex nuts ASTM A453 Grade 662A

ASTM A453 Grade 662 Chemical Element Composition Content (%)

Component C Si Mn P S Cr Ni Cu Mo Ti B Al
Minimum Value – 0.4 0.4 – – 12 24 – 2 1.8 0.001 –
Maximum Value 0.08 1 1 0.04 0.03 15 28 0.5 3.5 2.1 0.01 0.35

ASTM A453 Grade 662 Mechanical Properties

Heat Treatment or Condition Tensile Strength
σb
Mpa		 Yield Point
σs
Mpa		 Elongation or Extension Rate
δ
%		 Reduction of Area
ψ
%		 Hardness
HBW
Class A Solution Heat Treatment + Hardening ≥895 ≥585 ≥15 ≥18 248~321
Class B Solution Heat Treatment + Hardening ≥860 ≥550 ≥15 ≥18 248~321

ASTM A453 Grade 662 Stress Rupture Requirements

Grade Class Test Temperature Stress, Min Time to Rupture, min, hA Elongation, min, %
°F °C Ksi Mpa
Grade 662 A and B 1200 650 55 380 100 5

ASTM A453 Grade 662 Marking Requirements

Grade Class A Class B
Grade 662  662A  662B

Advantages of ASTM A453 Grade 662A Stud Bolts

  1. High-Temperature Stability,
  2. Corrosion Resistance,
  3. Strength and Durability:High tensile and yield strength ensure reliability in demanding applications.

Applications of ASTM A453 Grade 662A Stud Bolts

  1. Petrochemical Plants:
  2. Power Generation:
    • Boilers, turbines, and heat exchangers operating under thermal stress.
  3. Chemical Processing:
  4. High-Temperature Flanges and Piping