ASTM A36 Structural Steel

UNS K02600 low_alloy_steel
Validate composition

Quick answer

ASTM A36 Structural Steel is a low alloy steel specified by ASTM A36, UNS K02600. Typical composition: .

Low-carbon structural steel, the default workhorse grade for buildings, bridges, and general structural shapes. Good weldability and formability; not heat-treated.

Applicable Standards

  • ASTM A36
  • UNS K02600

Composition Ranges (wt %)

Element Min (%) Max (%) Typical Range
C — 0.26 ~0.13
Mn — 1.03 ~0.52
Si — 0.4 ~0.2
P — 0.04 ~0.02
S — 0.05 ~0.03
Cu 0.2 100.0 ~50.1
C 0.0–0.26% Mn 0.0–1.03% Si 0.0–0.4% P 0.0–0.04% S 0.0–0.05% Cu 0.2–100.0%

Typical Applications

  • Structural shapes (W, S, C)
  • Plate
  • Bar
  • Bridges and buildings

Frequently asked questions

Validate my sample against this spec Identify unknown alloy ← Back to all alloys

Need a tamper-evident certificate for this alloy?

Immutable, timestamped, and shareable with your customer or auditor.

Start free pilot →