ASTM A453 Grade 660 Washers

ASTM A453 Grade 660 Washers

ASTM A453 Grade 660 WashersASTM A453 Grade 660 Washers are machined from heat treated ASTM a453 grade 660 bar stock. Boltport offers metric and imperial sized flat/plain washers in ASTM a453 grade 660 material. These flat washers can be customized as per requirement, subject to availability of raw material.

Find information on ASTM a453 grade 660 tensile class, chemical composition, mechanical properties, heat treatment, stress rupture testing, etc.

ASTM A453 Grade 660 Chemical Compositon

Elements Range Product Variation, Over or UnderB
Carbon 0.08 max % 0.01 over
Manganese 2.00 max % 0.04
Phosphorus 0.040 max % 0.005 over
Sulfur 0.030 max % 0.005 over
Silicon 1.00 max % 0.05
Nickel 24.0 - 27.0 % 0.20
Chromium 13.5 - 16.00 % 0.20
Molybdenum 1.00 - 1.50 0.05
Tungsten - -
Tantalum 1.90 - 2.35 % 0.05
ColumbiumA ... ...
Aluminum 0.35 max % 0.05 over
Vanadium 0.10 - 0.50 % 0.03
Boron 0.001 - 0.010 % 0.0004 under to 0.0001 over
Copper - 0.15

ASTM A453 Grade 660 Heat Treatment

Grade Class Solutions Treatment Hardening Treatment
660 A 1650±25°F[900±14°C], hold 2h, min, and liquid quench 1325±25°F[720±14°C], hold 16h, air cool
660 B 1800±25°F[900±14°C], hold 1h, min, and liquid quench 1325±25°F[720±14°C], hold 16h, air cool
660 C 1800±25°F[900±14°C], hold 1h, min, and oil quench 1425±25°F[775±14°C], hold 16h, air cool
1200±25°F[650±14°C], hold 16h, air cool
660 D 1650±25°F[900±14°C], hold 2h min, and liquid quench OR
1800±25°F[980±14°C], hold 1h min, and liquid quench
1325±25°F[720±14°C], hold 16h, air cool
If necessary to achieve properties, second age:
1200±25°F[650±14°C], hold 16h, air cool
ASTM A453 Grade 660 Stud Bolts

Other ASTM A453 Grade 660 Products


Fastener Coatings

Washer Dimension Standards