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Carbon 1144 in bar

SPECIFICATIONS: GRADE CARBON 1144, AISI 1144, UNS G11440

Castle Metals stocks a wide range of Carbon 1144 bar. In addition to the U.S. and Canada, we warehouse inventory in Mexico, U.K, France, Singapore, and Shanghai. Customers calling us for 1144 a lot of times are struggling with production issues. So they also ask if Castle can process and make semi-finished parts. Anything that assists our customers in focusing on their core business is usually something that Castle Metals wants to with you on.

Carbon 1144 is a medium carbon, resulphurized steel with free-machining qualities. It contains higher carbon than 1141 or 1045 resulting in better heat treatability. Its high sulfur content results in good machinability while its Carbon and Manganese content cause good mechanical properties on cold drawing. With heavy draft cold drawing followed by stress relieving, even higher mechanical properties can be achieved with ASTM A311B, LaSalle’s Stressproof® and Fatigue-Proof®.  Carbon 1144 is perfect for applications requiring considerable machining at higher strength levels.

Applications:

  • Studs
  • Bolts
  • Axles
  • Pins
  • Gears
  • Sleeves
  • Keyed shafts
  • Motor shafts

Chemistry (range or maximum in %)

grade c mn p s other
1144 .40/.48 1.35/1.65 0.04 .24/.33 -
1144/ ASTM 311
CLASS B
STRESSPROOF ®
.40/.48 1.35/1.65 0.04 .24/.33 Si-
.15/.30
FATIGUE-PROOF® .40/.48 1.35/1.65 0.04 .24/.33 Si-
.15/.30

Grade 1144 Properties (typical for .75”-1.25” Rd.)

 

Grade shape size range tensile ksi yield ksi elongation % red. of area % Relative machinability*
1144 Rounds 3/16" - 5-1/4" 108 90 10 30 80%
1144/ ASTM 311 CLASS B
STRESSPROOF®
Rounds .236" - 4-1/2" 115 Min 100 Min 8 Min 25 Min 83%
Hexagons 1/4" - 2"
FATIGUE-PROOF® Rounds 1/4" - 2" 140 Min 125 Min 5 Min 15 Min 80%

*Relative Machinability is based on AISI 1212 as 100%

For more information, see Cold Finished Carbon Steel Bars Quick Guide