41L40 Steel Machining

Steel 41L40

Steel alloy 41L40 cold roll is a free-machining alloy (FMA), ideal for parts that require high wear resistance and toughness. The addition of lead makes it easy to machine, but results in lower impact strength than other steel alloys. 41L40 has good strength and ductility, and resists stress and creep at prolonged high temperatures.

41L40 has a machining cost factor of 2.8 when compared to steel 12L14. It is not ideal to weld due to its lead content. 41L40 can be heat treated, plated, forged, and annealed.

Industries & Applications

  • Couplings
  • Tooling
  • Shafts
  • Bolts

Steel Parts Gallery

Steel Cost Comparison

Type General Characteristics Alloy Common Applications Tolerances for a 1/2" Dia. Bar Material Cost Factor Machining Cost Factor
Steel
Designed for better machining w/lead additive; direct hardening
41L40
Couplings, shafts, tooling, bolts
Cold drawn
0
2.5 2.8

Common Material Cost Comparison

Type General Characteristics Alloy Common Applications Tolerances for a 1/2" Dia. Bar Material Cost Factor Machining Cost Factor
Steel
Designed for excellent machinability. Case hard only
12L14
Endless commercial products; probably more pounds used in turned products than any other bar stock
Cold drawn
0
1 1
Stainless Steel
Designed for machining, non-magnetic
303
Electronic hardware, automotive, aerospace, medical instruments, and many applications requiring corrosion resistance
Cold finished
+/- .002
1.9 2.7
Brass
Strength, corrosion and wear resistance, and excellent machinability
C35300
Well suited for parts with knurling or threading
+0015 3.5 .07
Aluminum
Designed for machining
2011
Electronic hardware, endless commercial products
Cold finish
+/-.0015
3.8 .6
Titanium
High strength, light weight, good bio-compatibility
Ti-6Al-4VEli
Medical implants
Ground & polished
+/-.002
30.2 6

To review our Machining Materials Guide, please click here.

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