ASTM A517 Grade Q quenched and tempered alloy steel plate for boilers and other pressure vessels

Review

Description

General Product Description

ASTM A517 Grade Q is a high-strength, quenched and tempered alloy steel plate intended for pressure vessel applications. A517 Grade Q is available in thicknesses up to 3.6 in. and has a minimum yield strength of 100 ksi up to 2.5 in. thick and 90 ksi for plates greater than 2.5 in. thick to 3.6 in. thick. ASTM A517 Grade Q also has required Charpy V-notch impact property requirements.

Dimension Range

GRADE	PRODUCT TYPE	THICKNESS (in)	WIDTH (in)	LENGTH (in)
Q	Plate	0.197 - 3.60	60 - 131.9	73 - 590

Mechanical Properties

Tensile Test: Tensile testing is performed in the transverse direction according to ASTM A20 requirements.

GRADE	THICKNESS (in)	YIELD STRENGTH (MIN ksi)	TENSILE STRENGTH (ksi)	ELONGATION IN 2" 1) (MIN %)	REDUCTION IN AREA FOR RECTANGLE SPECIMENS 2) (MIN %)	REDUCTION IN AREA FOR ROUND SPECIMENS 3) (MIN %)
Q	0.197 - 2.50	100	115 - 135	16	35	45
Q	0.251 - 3.60	90	105 - 135	14	—	45

1) See specification A20 for elongation adjustment.

2) Reduction in area for 1.5 inches wide rectangular tension specimen.

3) Reduction in area for 0.5 inch wide round tension specimen.

Mechanical Testing

Charpy V-Notch Impact Properties: A trasverse Charpy V-notch lateral expansion of 0.015” [0.38 mm] in individual specimens is required. The test temperature shall be agreed upon between the manufacturer and purchaser. Please inquire for required Charpy V-notch test temperature and for other specified minimum impact property requirements.