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