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Trucks

1018 HR Special Bar Quality

HOT ROLLED & COLD FINISHED

PACIFIC 1018 is the standard analysis for low carbon machinery steels and is best known for use in "cold rolled" bars. PACIFIC's hot rolled 1018 offers consistent machinability with good weldability. This special quality 1018 meets ASTM A576 special bar requirements and is vacuum degassed, calcium treated and ultrasonic tested for soundness. These bars are rough turned oversize to finish at nominal size for economical machining. This grade can be surface hardened by carburizing but does not respond to through hardening heat treatment.


CHEMICAL COMPOSITION
Heat Analysis - ranges and limits %

C
.15/.20
Mn
.60/.90
P
.040 MAX
S
.050 MAX

TYPICAL PROPERTIES
Approximate - not for specification

Tensile (psi)
65,000
Yield (psi)
42,000
Elongation
35%
Hardness
137 HB
Machinability
55%

PROCESSING TEMPERATURES
Typical

Forge
2300°F MAX
Normalize
1625/1725°F
Case Harden
1500/1700°F

Shapes and Conditions Available
Rough Turned Oversize Rounds