The Steel Supply Company

Buyers Guide

Bar Material Specification HY-1045/1050

Produced Per ASTM A311, Class B

Chemical Composition Limits
Carbon 0.43-0.55
Manganese 0.60-0.90
Phosphorous .040 Max.
Sulfur .050 Max.
Mechanical Properties of HY-1045/1050
Tensile Strength, PSI 115,000 Min.
Tensile Strength, Mpa 795
Yield Strength, PSI 100,000 Min.
Yield Strength, Mpa 690
Elongation % 10
Reduction of Area % 20
Brinell Hardness 200

*Mpa is the abbreviation for Megapascals.

HY-1045/1050 is a stress relief annealed grade used when higher strength material is recommended. Items are stocked from 1/4" diameter through and including 4-1/2" diameter, and metric diameters from 6mm through and including 110mm diameter. It should be noted that 4-1/2" is the maximum diameter currently being produced to ASTM A311, Class B specifications.


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