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4130 CD Annealed

4130 CD Normalized

4130cdanneal.jpg

PACIFIC 4130 is a chromium-molybdenum low alloy steel with lower carbon than the more popular 4140. Because of lower carbon content, it has better weldability but lower hardenability (response to hardening). Maximum achievable hardness by furnace hardening is approximately 52 HRC. 4130 can be hardened by either water or oil quenching. PACIFIC 4130 is furnished in either the annealed or normalized condition depending upon mill availability.

Chemical Composition

Heat Analysis - ranges and limits %

C

.28/.33

Mn

.40/.60

P

.035 Max

S

.040 Max

Cr

.80/1.10

Mo

.15/.25

Typical Properties

Approximate - not  for specification

Tensile (psi)

95,000

Yield (psi)

80,000

Elongation

18%

Hardness

179 HB

Machinability

70%

Processing Temperatures

Typical

Forge

2200°F Max

Normalize

1600/1700°F

Anneal 

1525/1575°F

Water Harden

1550/1600°F

Oil Harden

1575/1625°F

Temper

400/1300°F

Shapes and Conditions Available
  • Annealed Cold Drawn Rounds from 1/2" through 3/4" Diameter

  • Normalized Cold Drawn Rounds from 7/8" through 1-1/2" Diameter