S/B2X15.3/4 STUD BOLT 2" X 15-3/4" ASTMA320L7 API 20E BSL3 W/CERTS

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MSRP: $469.04

$446.70

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SKU:

FGBK-23-BN-62

Condition:

New

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ASTM A320 L7 is manufactured from AISI 4140 base material and is supplied in a quenched and tempered condition. Due to the impact requirements at low temperatures, it is mainly used in a low-temperature environment or application, predominantly but not exclusively up to 2 ½” in diameter.

Lonestar can offer this material in a standard condition, or it can be provided with supplementary testing as defined in ASTM A320. This material can also be offered fully in compliance to the additional requirements of API 20E BSL 1, 2 and 3.

ASTM A320 L7: Forms

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

ASTM A320 L7: Sizes and Threads

	LoneStar Manufacture
Metric Coarse	✓
Metric Fine	✓
Imperial UNC	✓
Imperial 8UN	✓
Imperial UNF	✓
ACME	✓
Metric sizes available	Up to M100
Imperial sizes available	Up to 6.00″

ASTM A320 L7: Chemical Composition

Carbon	0.38-0.48	%
Manganese	0.75-1.00	%
Phosphorus	0.035	% Max
Sulphur	0.040	% Max
Silicon	0.15-0.35	%
Chromium	0.80-1.10	%
Nickel	–	…
Molybdenum	0.15-0.25	%
Copper	–	…
Niobium	–	…
Titanium	–	…
Vanadium	–	…
Aluminium	–	…
Nitrogen	–	…

ASTM A320 L7: Mechanical Properties

	2.1/2″ and under	Over 2.1/2″ to 4″	Over 4”
Tensile Strength Min, Ksi (MPa)	125 (860)	115	100
Yield Strength min, 0.2% offset Ksi (MPa)	105	95	75
Elongation in min%	16	16	18
Reduction of Area min%	50	50	50
Hardness Max	321 HBW	321 HBW	321 HBW
Hardness Max	35 HRC	35 HRC	35 HRC

ASTM A320 L7: Impact Properties

Test Temperature °F (°C)	-150 (-101)
Average impact toughness, min, ft-lbf (J)	20 (27)
Average impact toughness, min, ft-lbf (J)	15 (20)

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