ASTM A453 660D

Learn more about the forms, sizes, and properties of our ASTM A453 660D products below.

ASTM A453 660D Grade is used in high-temperature applications offering expansion co-efficient comparable to austenitic stainless steels. The grades of A/B/C and D are defined by the solution treatment and subsequent hardening treatment of the material as defined under ASTM A453.

Common uses of this grade are oil, gas and petrochemical and power generation applications, normally in adverse or challenging conditions at elevated temperatures.

LoneStar Fasteners Europe can manufacture product in various forms to the standard of A453, including its supplementary requirements. A453 Grade 660D is also manufactured by LoneStar Fasteners Europe under the additional requirements of API 20F BSL 2 and 3.

ASTM A453 660D: Forms

	LoneStar Manufacture
Stud Bolts	✓
Studding	✓
Hexagon Headed Bolting	✓
Socket Headed Bolting	✓
Double Ended and Waisted Studs	✓
Associated OEM Parts	✓
Nuts	✓

ASTM A453 660D: Sizes and Threads

	LoneStar Manufacture
Metric Coarse	✓
Metric Fine	✓
Imperial UNC	✓
Imperial 8UN	✓
Imperial UNF	✓
ACME	✓
Metric sizes available	Up t0 M100
Imperial sizes available	Up to 4.00″

ASTM A453 660D: Chemical Composition

Carbon	0.08	% Max
Manganese	2.00	% Max
Phosphorus	0.040	% Max
Sulphur	0.030	% Max
Silicon	1	% Max
Chromium	13.5-16.0	%
Nickel	24.0-27.0	%
Molybdenum	1.00-1.50	%
Copper	–	…
Niobium	–	…
Titanium	1.90-2.35	%
Vanadium	0.10-0.50	%
Aluminium	0.35	% Max
Boron	0.001-0.010	%

ASTM A453 660D: Mechanical Properties

	Up to 2 ½” Inc. (63.5mm)	Over 2 ½” (63.5mm)
Tensile Strength Min, Ksi (MPa)	130 (895)	120 (825)
Yield Strength min, 0.2% offset Ksi (MPa)	105 (725)	95 (655)
Elongation min%	15	15
Reduction of Area min%	18	18
Hardness	248-321 HB	248-321 HB
Hardness	24-35 HRC	24-35 HRC