A514 Grade Q
US quenched and tempered plate: 100 ksi (690 MPa) yield up to 2.5 in, 90 ksi above, 110–130 ksi tensile.
Each A514 grade letter is a chemistry limited to a maximum thickness; Grade Q goes to 6 in. No impact test unless ordered as a supplement.
Compared with S690QL on its equivalents table.
- Yield strength ReH
- ≥ 690 MPa1guaranteed minimum
- Tensile strength Rm
- 760–895 MPa1guaranteed range
- Elongation after fracture A
- ≥ 16 %1guaranteed minimum · in 2 in.
- Brinell hardness HB
- 235–293 HB1guaranteed range
How we know these values · 7 values from 1 source
- Single source
- 7
- Click any value under “All values” to see the sources that state it, with dates.
- How we rate evidence
What to watch
- Guaranteed yield strength depends on thickness: 690 MPa for 4.7–63.5 mm, down to 620 MPa for 63.5–152 mm.
- As a substitute for S690QL: Same 690 MPa (100 ksi) minimum up to 2.5 in, but A514 has no standard impact test and its 90 ksi step comes at 63.5 mm, not 50 mm.
All values
- Identity and composition not yet
- Mechanical 7
- Design values not yet
- Physical not yet
- Thermal not yet
- Fire not yet
- Chemical and durability not yet
Mechanical
Strength
Yield strength ReH
Upper yield strength guaranteed by the product standard (minimum).
| Condition | Value | Evidence |
|---|---|---|
| ≥ 690MPa | Single source | |
| ≥ 620MPa | Single source |
Tensile strength Rm
Ultimate tensile strength. Product standards give a range or a minimum.
| Condition | Value | Evidence |
|---|---|---|
| 760–895MPa | Single source | |
| 690–895MPa | Single source |
Brinell hardness HB
Resistance to indentation by a hard ball; for castings and bearings.
| Condition | Value | Evidence |
|---|---|---|
| 235–293HB | Single source |
Ductility
Elongation after fracture A
Minimum elongation; depends on gauge length and test direction.
| Condition | Value | Evidence |
|---|---|---|
| ≥ 16% | Single source | |
| ≥ 14% | Single source |
Listed as equivalent to
- S690QL (EN 10025-6) — Same 690 MPa (100 ksi) minimum up to 2.5 in, but A514 has no standard impact test and its 90 ksi step comes at 63.5 mm, not 50 mm.
Compare side by side
With any other gradeSources here are public pages that reproduce ASTM A514/A514M. For design and acceptance, the standard edition named in your specification and the inspection certificate (EN 10204 3.1) of the delivered product take precedence. Design factors are recommended values; your National Annex may set others.