General Product Description
The ASTM A709 is the Standard Specification for Structural Steel for Bridges and encompasses carbon, high-strength low-alloy, and quenched and tempered alloy steels used as structural plates in the construction of bridges. Of the five grades SSAB offers, three grades have an ASTM G101 enhanced Atmospheric Corrosion Resistance Index of ≥6.0.
Available Dimensions
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| GRADE | THICKNESS (in) |
WIDTH (in) |
LENGTH (in) |
|---|---|---|---|
| 36 | 0.1875 - 3.00 | 72 - 120 | 240 - 1200 |
| 36T | 0.1875 - 3.00 | 72 - 120 | 240 - 1200 |
| 36F | 0.1875 - 2.00 | 72 - 120 | 240 - 1200 |
Width: Please inquire for plate widths less than 72 in. and over 120 in. Inquire for widths greater than 96 in. for thicknesses less than 0.250 in.
Length: Please inquire for plate lengths greater than the listed maxima. Plate length may be limited by maximum individual plate weight of 66,000 lbs. Plate length maximum of 960 in. for thicknesses less than 7/16 in.
Mechanical Properties
Tensile testing is performed in the transverse direction according to ASTM A370 requirements.
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| GRADE | THICKNESS (in) |
YIELD STRENGTH 1) (MIN ksi) |
TENSILE STRENGTH (ksi) |
ELONGATION IN 2" 2) (MIN %) |
ELONGATION IN 8" 2) (MIN %) |
|---|---|---|---|---|---|
| 36 | 0.1875 - 3.00 | 36 | 58 - 80 | 23 | 20 |
| 36T | 0.1875 - 3.00 | 36 | 58 - 80 | 23 | 20 |
| 36F | 0.1875 - 3.00 | 36 | 58 - 80 | 23 | 20 |
1) Yield strength measured as 0.2% offset or 0.5% extension under load.
2) For plates wider than 24 in, the elongation requirement is reduced by two percentage points. See elongation requirement adjustments in the Tension Test section of Specification ASTM A6.
Impact Properties
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| GRADE | THICKNESS (in) |
MIN LONGITUDINAL AVERAGE ENERGY 1) (ft-lbs) |
MIN LONGITUDINAL INDIVIDUAL VALUE 1) (ft-lbs) |
ZONE 1 TEST TEMP | ZONE 2 TEST TEMP | ZONE 3 TEST TEMP |
|---|---|---|---|---|---|---|
| 36F | 0.1875 - 2.00 | 25 | - | 70 oF | 40 oF | 10 oF |
| 36T | 0.1875 - 3.00 | 15 | 20 | 70 oF | 40 oF | 10 oF |
| GRADE | THICKNESS (in) |
MIN LONGITUDINAL AVERAGE ENERGY 1) (ft-lbs) |
MIN LONGITUDINAL INDIVIDUAL VALUE 1) (ft-lbs) |
ZONE 1 TEST TEMP | ZONE 2 TEST TEMP | ZONE 3 TEST TEMP |
|---|
1) CVN impact testing in accordance with ASTM A673.
Please inquire for orders requiring CVN impact testing.
Chemical Composition
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| THICKNESS (in) | C 1) (MAX wt %) |
MN 1) (wt %) |
P (MAX wt %) |
S (MAX wt %) |
SI (wt %) |
CU 2) (MIN wt %) |
|---|---|---|---|---|---|---|
| 0.1875 - 0.750 | 0.25 | - | 0.030 | 0.030 | 0.40 | 0.20 |
| 0.751 - 1.500 | 0.25 | 0.80 - 1.20 | 0.030 | 0.030 | 0.40 | 0.20 |
| 1.501 - 2.500 | 0.26 | 0.80 - 1.20 | 0.030 | 0.030 | 0.15 - 0.40 | 0.20 |
| 2.501 - 3.000 | 0.27 | 0.80 - 1.20 | 0.030 | 0.030 | 0.15 - 0.40 | 0.20 |
1) For each reduction of 0.01% below the specified carbon maximum, an increase of 0.06% manganese above the specified maximum will be permitted up to a maximum of 1.35%.
2) Copper minimum when copper steel is specified.
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