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What is ASTM A514 Grade Q Equivalent?

 

ASTM A514 Grade Q is a high-yield-strength, quenched and tempered alloy steel plate known for its excellent toughness and weldability in thick sections, making it suitable for structural applications like offshore platforms and heavy machinery. While exact equivalents depend on specific requirements, common international matches include EN 10025-6 S690Q (European), GB/T 16270 Q690E (Chinese), and JIS G3128 SHY685N (Japanese), sharing similar high-strength properties. As a leading manufacturer and exporter, Gangsteel produces premium astm a514 grade q plates that align with these equivalents, ensuring compatibility for global projects through rigorous testing.

Overview of ASTM A514 Grade Q

Grade Q is part of the ASTM A514/A514M specification, offering a minimum yield strength of 100 ksi (690 MPa) up to 2.5" thick and 90 ksi (620 MPa) for thicker plates up to 8". It is quenched and tempered for enhanced hardness (235-293 HBW) and impact resistance. Equivalents are selected based on similar chemical composition and mechanical properties, though slight differences may exist in alloying or testing. Gangsteel's ASTM A514/A514M steel plate meets or exceeds these for interchangeable use.

 

Equivalent Grades to ASTM A514 Grade Q

Common equivalents from various standards are listed below, focusing on high-strength Q&T steels with comparable yield strength and composition.

Standard

Equivalent Grade

Notes

EN 10025-6

S690Q

European equivalent with min yield 690 MPa; similar toughness.

GB/T 16270

Q690E

Chinese standard; high-strength structural steel with equivalent properties.

JIS G3128

SHY685N

Japanese equivalent for welded structures; comparable strength and weldability.

DIN

StE690V

German standard; matches in quench-tempered high-strength category.

ASTM A517

Grade Q

Similar within ASTM family, for pressure vessels but interchangeable in some uses.

These equivalents are indicative; always verify for specific project requirements. Gangsteel's Grade Q plates are produced to match these standards seamlessly.

 

Chemical Composition of ASTM A514 Grade Q

For reference, the composition contributes to its equivalence.

Element

Content (%)

C

0.14-0.21

Mn

0.95-1.30

P (max)

0.035

S (max)

0.035

Si

0.15-0.35

Ni

1.20-1.50

Cr

1.00-1.50

Mo

0.40-0.60

V

0.03-0.08

B

0.001-0.005

 

Mechanical Properties of ASTM A514 Grade Q

Equivalents share similar properties.

Property

Up to 2-1/2" Thick

>2-1/2" to 6" Thick

Yield Strength (min, ksi/MPa)

100 / 690

90 / 620

Tensile Strength (ksi/MPa)

110-130 / 760-895

100-130 / 690-895

Elongation (min, %)

18

16

Brinell Hardness (HBW)

235-293

235-293

 

Applications and Considerations for Equivalents

A514 Grade Q is used in mining and offshore where equivalents like S690Q provide similar performance. Gangsteel's plates ensure interchangeability with these standards.

FAQ

  • What is the EN equivalent to ASTM A514 Grade Q?EN 10025-6 S690Q, with similar high-strength quenched and tempered properties.
  • What is the Chinese equivalent to A514 Grade Q?GB/T 16270 Q690E, offering comparable yield strength and toughness.
  • Is ASTM A517 Grade Q equivalent to A514 Grade Q?Similar, but A517 is for pressure vessels; they share specs in many cases.
  • What is the JIS equivalent to A514 Grade Q?JIS G3128 SHY685N, suitable for welded high-strength structures.
  • Where can I buy A514 Grade Q or equivalents?Gangsteel supplies compliant plates; contact for astm a514 grade q.

 

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