The Steel Supply Company

Buyers Guide

Bar Material Specification HY-130 (4140-4150 QTSRA)

Produced Per ASTM A434 B, C

Chemical Composition Limits
Carbon 0.38-0.53
Manganese 0.75-1.00
Phosphorous 0.35 Max.
Sulfur 0.040 Max.
Chromium 0.80-1.10
Molybdenum 0.15-0.25
Mechanical Properties of HY-130 (4140-4150 QTSRA)
Tensile Strength, PSI 120,000
Tensile Strength, Mpa 830
Yield Strength, PSI 90,000
Yield Strength, Mpa 620
Elongation % 8
Reduction of Area % 20
Brinell Hardness 269

*Mpa is the abbreviation for Megapascals.

HY-130 is an alloy grade 4140/4150 quench and tempered, machine straightened, and stress relief annealed shafting grade providing toughness, strength, and ductility. Diameters start at 1/4" and continue through and including 8" diameter, and metric diameters from 10mm through and including 100mm diameter.

4140/4150 annealed only items are not available from stock.


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