ASTM A606 Corrosion-Resistant Steel Sheet

ASTM A606 steel sheet is desirable in conditions where corrosion resistance is required. 


  • Corrosion-resistant structural steel sheet that has a high durability.
  • Available in three types: Type II, Type IV (most common) and Type V.
  • Available as hot-rolled and cold-rolled, but Leeco only supplies hot-rolled.
  • Often referred to as Corten or Weathering steel.
  • In addition to carbon, manganese, sulfur and copper, Type IV may contain other alloying elements to further resist corrosion at the discretion of the manufacturer.
  • Charpy test requirements may be requested.
  • May be certified to meet multiple standards on Mill Test Report, but guaranteed to be certified to meet A606 standards.


Available Sizes

Leeco® Steel stocks the following standard sizes, but other sizes may be available for special orders.

A606 Type II & IV 3/16" – 3/4" 48" – 96" Up to 480"

Material Properties

The following material properties are ASTM specifications and will be confirmed on the Mill Test Report

Grade Yield Point (ksi) Tensile Strength (ksi) Min. 2” Elongation %
Type II & IV – As-rolled 50 70 22
Type II & IV – Annealed or normalized 45 65 22


Chemical Composition

The following composition properties are ASTM specifications for these A606 grades. Note that Type IV may contain additional alloy elements to resist corrosion at the discretion of the manufacturer.

Type II & IV
Carbon 0.22%
Manganese 1.25%
Sulfur 0.04%
Copper 0.20% min


Type V
Carbon 0.09%
Manganese 0.70-0.95%
Phosphorus 0.025%
Sulfur 0.010%
Silicon 0.40%
Nickel 0.52-0.76%
Chromium 0.30%
Copper 0.65-0.98%
Titanium 0.015%
Vanadium 0.015%
Niobium 0.08%