A283 Gr.C
Data under reviewASTM A283 Grade C is a low-to-intermediate tensile carbon steel plate intended for general structural and tank work not requiring code pressure-vessel quality. It is the economy plate grade behind much non-critical US fabrication.
Chemical composition
| Element | Content (%) |
|---|---|
| C | ≤0.24 |
| Si | 0.15–0.40 |
| Mn | ≤0.90 |
| P | ≤0.035 |
| S | ≤0.035 |
Weight percent, per the governing standard ranges. Actual values per heat are on the mill certificate.
Properties
| Yield strength | ≥205 MPa |
| Tensile strength | 380–485 MPa |
| Density | 7.85 g/cm³ |
Heat treatment
Supplied as-rolled; no hardening treatment.
Equivalent grades
| Standard | Designation |
|---|---|
| aisi | A283 Gr.C |
| gb | Q235B (near) |
Compare side by side: A283 Gr.C vs Q235B
Equivalents overlap in chemistry and use but are not always identical — see our equivalents guide before substituting in certified designs.
Applications & Processing
Applications: Storage tanks (non-code), general structures, ducts, low-duty machinery.
Processing: Very easy welding and forming; for pressure-retaining parts use A516 instead — A283 is not a pressure-vessel quality specification.
Need A283 Gr.C from stock?
Steel.Wiki is sponsored by Shenzhen NewAsia Special Steel (Nasteel), a special-steel stockholder in Shenzhen stocking mold, tool and alloy steels with EN 10204 3.1 certification.
Ask for a quotationVisit NasteelSource: ASTM A283 published ranges · Last updated 2026-11-03. Data is indicative — verify critical values against the governing standard and mill certificate before use.