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ASTM A453 Grade 662 Bolts

astm-a453-grade-662-stud-boltsASTM A453 Covers Specification for High temperature Bolting with expansion co-efficient comparable to Austenitic Stainless Steel. One of the commonly used is grade 662 Bolts. We produce Stud Bolts, Hex Bolts ,Expansion bolts,threaded rods etc as per A453 Grade 662 in Class A/B , intended for Special Engineering Applications . TorqBolt Manufactures , Stocks & Supply these A453 Grade 662 A/B StudBolts, Stainless Steel Bolting in various sizes & Coatings.

For quick Quote on Grade 662 Fasteners, please contact our Sales team.

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Grades & Classes ( Click on the individual Class to navigate )

Grade 660 Class A Class B Class C Class D
Grade 651 Class A Class B    
Grade 662 Class A Class B    
Grade 665 Class A Class B    
Grade 668 Class A Class B    

 

Material Chemical Composition Requirements

ELEMENT Grade 660 Grade 651 Grade 662 Grade 665 Grade 668
% % % % %
Carbon 0.08 max 0.28-0.35 0.08 max 0.08 max 0.08 max
Manganese 2.00 max 0.75-1.5 0.40-1.00 1.25-2.00 2.00 max
Phosphorus, max 0.040 max 0.040 max 0.040 max 0.040 max 0.040 max
Sulfur, max 0.030 max 0.030 max 0.030 max 0.030 max 0.030 max
Silicon 1.00 max 0.30-0.80 0.40-1.00 0.1-0.80 1.00 max
Nickel 24.0-27.0 8.0-11.0 24.0-28.0 24.0-28.0 17.5-21.5
Chromium 13.5-16.0 18.0-21.0 12.0-15.0 12.0-15.0 13.5-16.0
Molybdenum 1.00-1.50 1.00-1.75 2.0-3.50 1.25-2.25 1.50 max
Tungsten ... 1.00-1.75 ... ... ...
Titanium 1.9-2.35 0.1-0.35 1.80-2.10 2.70-3.30 2.20-2.80
Columbium * ... 0.25-0.6 ... ... ...
Aluminum 0.35 max   0.35 max 0.25 max 0.50 max
Vanadium 0.10-0.50   ... ... 0.50 max
Boron 0.001-0.010   0.001-0.010 0.01-0.07 0.001-0.010
Copper   0.50 max 0.50 max 0.25 max ...

 

Mechanical Properties Requirements

Size Class Tensile, Mpa Yield, Mpa Elong. %, min RA %, min
Grade 660 A, B , & C 895 min 585 min 15 18
  D 895 min 725 min 15 18
Grade 651 A 690 min 485 min 18 35
415 min
  B 655 min 415 min 18 35
345 min
Grade 662 A 895 min 585 min 15 18
  B 860 min 550 min 15 18
Grade 665 A 1170 min 830 min 12 15
  B 1070 min 830 min 12 15
Grade 665 A & B 895 min 858 min 15 18

 

Heat Treatment Requirements

Grade Class Solutiona Treatment Hardening Treatment
660 A 1650 +/- 25 °F [900 +/-14 °C], hold 2 h, min and liquid quench 1325 +/- 25 °F [720 +/- 14 °C] 16h, air cool
B 1800 +/- 25 °F [980 +/-14 °C], hold 1 h, min and liquid quench 1325 +/- 25 °F [720 +/- 14 °C] 16h, air cool
C 1800 +/- 25 °F [980 +/-14 °C], hold 1 h, min and oil quench 1425 +/- 25 °F [775 +/- 14 °C] hold 16h, air cool followed by 1200 +/- 25 °F [650 +/- 14 °C], hold 16h, air cool
D 1650 +/- 25 °F [900 +/-14 °C], hold 2 h, min and liquid quench OR

1325 +/- 25 °F [720 +/- 14 °C] hold 16h, air cool followed by 1200 +/- 25 °F [650 +/- 14 °C], hold 16h, air cool

if neccessary to achieve properties, second age : 1200 +/- 25 °F [650 +/- 14 °C] hold 16h, air cool

  1800 +/- 25 °F [980 +/-14 °C], hold 1 h, min and liquid quench
651 A   hot-cold worked at 1200 °F[650] min with 15% min reduction in cross sectional area, stress-relief anneal at 1200 °F [650 °C] min or 4h, min
B   hot-cold worked at 1200 °F[650] min with 15% min reduction in cross sectional area, stress-relief anneal at 1350 °F [730 °C] min or 4h, min
662 A 1800 +/- 25 °F [980 +/-14 °C], hold 1 h, min and liquid quench 1350 to 1400 °F [730 to 760 °C], hold 20h, furnace cool to 1200 +/- 25 °F [650 +/- 14 °C], hold 20h, air cool
B 1950 +/- 25 °F [1065 +/-14 °C], hold 2 h, min and liquid quench 1350 to 1400 °F [730 to 760 °C], hold 20h, furnace cool to 1200 +/- 25 °F [650 +/- 14 °C], hold 20h, air cool
665 A 1800 +/- 25 °F [980 +/-14 °C], hold 3 h, min and liquid quench 1350 to 1400 °F [730 to 760 °C], hold 20h, furnace cool to 1200 +/- 25 °F [650 +/- 14 °C], hold 20h, air cool
B 2000 +/- 25 °F [1095 +/-14 °C], hold 3 h, min and liquid quench 1350 to 1400 °F [730 to 760 °C], hold 20h, furnace cool to 1200 +/- 25 °F [650 +/- 14 °C], hold 20h, air cool
668 A 1650 +/- 25 °F [900 +/-14 °C], hold 2 h, min and liquid quench 1325 +/- 25 °F [720 +/- 14 °C] 16h, air cool
B 1800 +/- 25 °F [980 +/-14 °C], hold 1 h, min and liquid quench 1325 +/- 25 °F [720 +/- 14 °C] 16h, air cool

 

Stree Rupture Requirements

Grade Class Test Temperature Stress, Min Time to Rupture Elongation
Deg F [ Deg C ] Ksi Mpa Min, h* Min %
660 A, B & C 1200 [650] 56 385 100 5
651 A & B 1200 [650] 40 275 100 5
662 A & B 1200 [650] 55 380 100 5
665 A 1200 [650] 75 515 100 3
B 1200 [650] 70 485 100 5

 

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