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8630 Hot Rolled SBQ Bar

HR 8630 steel bar is a grade that has contains nickel, chromium and molybdenum. It is characterized as having good hardenability, and good strength and toughness. Eaton Steel Bar Company stocks many diameters of 8630 hot rolled steel to meet the market demand. We also supply AISI 8630 steel bar to various industries like automotive, construction, and oil and gas.

1018 hot-rolled-steel-bar


Typical applications for this grade of steel include gears, shafts, forged connectors, hangers and block valves. 

Shapes and Sizes

Eaton Steel Bar Company supplies 8630 steel bar in a variety of sizes ranging from 7/8”- 3”. The shapes available for this grade include:

  • Rounds
  • Rounded Cornered Square

Standard "8630 Grade" Chemical Composition

Carbon .28-.33
Manganese .65-.95
Phosphorus (max) .035
Sulfur (max) .04


Estimated Mechanical Properties for "Grade 8630"

Tensile strength 89,900 psi
Yield strength 79,800 psi
Elongation in 2” 16%
Reduction of area 54%
Brinell Hardness 156-302