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41L40 CD Annealed

HOT ROLLED & COLD FINISHED

PACIFIC 41L40 is the free machining version of MOLY-KROME®. The addition of a small amount of lead to the chemistry plus cold drawing increases the average machinability rating to 86%. This leaded grade can be heat treated the same as a standard 4140 to achieve similar hardness and strength. Impact toughness is somewhat lower for the leaded grade for hardnesses exceeding 35 HRC. 41L40 works well in screw machines. It is sometimes used in the as received condition but is normally heat treated prior to use.

CHEMICAL COMPOSITION
Heat Analysis - ranges and limits %

TYPICAL PROPERTIES
Approximate - not for specification

Shapes and Conditions Available
Annealed Cold Drawn Rounds through 2-3/4" Diameter

Carbon & Alloy Steel

1018 HR Special Bar Quality
1045 HR Special & Commerical Quality
4142 As Rolled
4142 Normalized
4142 Annealed
4142 Heat Treated
4150 Heat Treated Resulfurized
4340 Annealed
4340 Heat Treated
8620 As Rolled

1018 Cold Drawn
1018 Turned & Polished
1040/45 Turned & Polished
1045 Arrow-Ten® G&P
1045 G & P Ring Guage Quality
Stressproof® As Drawn
Stressproof® G & P
Fatigue-Proof® As Drawn
12L14 Cold Drawn
303 Stainless CD or CG
Acralloy® HT SRD G & P
Super Acralloy® E-4340 TG & P
e.t.d. 150® As Drawn
41L40 CD Annealed
4130 CD Normalized
4130 CD Annealed
86L20 Cold Drawn
86L20 CD Ground & Polished
17-4 PH Stainless CG