ASTM A830-1045 High-Carbon Steel Plate

Leeco® Steel stocks and supplies ASTM A830-1045 high-carbon steel plate throughout North America.


  • High-carbon steel plate with high strength and hardness properties.
  • Can be heat-treated.
  • Typically used in manufacturing of gears, axles, shafts and machine parts.
  • While not routinely tested for mechanical properties, these can be requested as-needed.


Available Sizes

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

A830-1045 1/4" – 3" 48" – 120" Up to 480"

Minimum order weight in the USA is 20 tons. For orders weighing less than 20 tons, additional freight surcharges may be applied. Minimum order weight for orders outside of North America is 500 MT.

Chemical Composition

The following composition properties are ASTM specifications for the A830 steel grade.

Carbon 0.43-0.50%
Manganese 0.60-0.90%
Phosphorus max 0.030%
Sulfur max 0.030%