General Product Description
ASTM A633 Grade C is a normalized high-strength low-alloy structural steel plate for welded, riveted or bolted construction requiring superior notch toughness performance at low ambient temperatures. A633 Grade C has a minimum yield strength of 50 ksi [345 MPa] and may be ordered with supplemental Charpy V-notch impact test requirements.
Applications
Typical applications for A633 Grade C include utility pole base plates, offshore oil and gas platforms, construction equipment frames, electric shovel dipper handles and suspension components.
Available Dimensions
The following A633 Grade C plate sizes are available:
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| THICKNESS (in) |
WIDTH (in) |
LENGTH (in) |
|---|---|---|
| 0.375 - 2.00 | 72 - 123 | 240 - 600 |
| 2.001 - 3.00 | 72 - 98 | 240 - 600 |
Thickness: Inquire thicknesses <0.375" down to 0.250" and >3" up to 4".
Width: Inquire widths <72" down to 60" and >123" up to 131.9".
Length: Inquire lengths <240" down to 73" and slightly >600".
Mechanical Properties
Tensile Testing is performed in the transverse direction according to ASTM A6 requirements. The specified mechanical properties are tabulated below:
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| THICKNESS (in) |
YIELD STRENGTH (MIN ksi) |
TENSILE STRENGTH (ksi) |
ELONGATION IN 2" (MIN %) |
ELONGATION IN 8" (MIN %) |
|---|---|---|---|---|
| 0.375 - 2.50 | 50 | 70 - 90 | 21 | 16 |
| 2.501 - 3.00 | 46 | 65 - 85 | 21 | 16 |
Charpy V-Notch Impact Toughness:
May be ordered as a supplementary requirement. A minimum Charpy V-notch impact energy value of 25 ft-lbs. [34 J] at -40°F [-40°C] in longitudinal specimens is a typical supplemental impact toughness requirement. Please inquire for applications requiring a specified minimum impact toughness.
Chemical Composition
Meets chemical requirements of ASTM A633 Grade C, as shown below (ladle analysis, wt% maximums unless noted):
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| C (MAX %) |
MN 1) (%) |
P 2) (MAX %) |
S 2) (MAX %) |
SI (%) |
CB (%) |
|---|---|---|---|---|---|
| 0.20 | 1.15 - 1.50 | 0.020 | 0.010 | 0.15 - 0.50 | 0.01 - 0.05 |
1) Manganese content may be increased to 1.60% maximum provided the carbon content does not exceed 0.18%.
2) P and S more restrictive than A633 Grade C requirements.
Carbon Equivalent
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| THICKNESS (in) | 0.375 - 2.00 | 2.001 - 3.00 |
|---|---|---|
| Typical CET (wt %) | 0.31 | 0.33 |
| Typical CEV (wt %) | 0.43 | 0.45 |
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