A606-4 Sheet

Characteristics

A606 Type 4 sheet is a High Strength Low Alloy (HSLA) steel sheet with improved corrosion resistance when compared to carbon steel. Type 4 has four times the atmospheric corrosion resistance of structural carbon steel. It is weldable, formable, punchable, and machinable using the proper techniques. ASTM A606-4 sheet is often used in the unpainted condition as the surface will develop a weathered orange-brown oxide that is resistant to corrosion. In addition, it is 20-30% lighter than carbon steel and is used for applications that require high strength-to-weight ratios.

Corten is a trade name associated with this A606 Type 4 sheet.

Applications

ASTM A606-4 sheet product is used in all types of high stress structural applications. These include:

  • Automotive
  • Truck and bus frames
  • Building structural components
  • Cranes and derricks

Sizes

< 3/16”

Typical Chemical Properties

Carbon, Max %

0.22 - 0.26

Manganese, Max %

1.25 - 1.3

Phosphorus, Max %

0.04 - 0.06

Typical Mechanical Properties

Tensile Strength ksi

70

Yield 2% Offset ksi

50

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