Material Price Book
PricesDrawing EstimatorCalculatorBlog
Material Price Book

© 2026 Material Price Book

PricesMethodologyBlogNewsletterPrivacy
hello@materialpricebook.com
  1. Home
  2. >Prices
  3. >Steel
  4. >1144 A311 CL-B
  5. >Round Bar
1144 A311 CL-B Steel Round Bar

Steel 1144 A311 CL-B Round Bar Prices

Current 1144 A311 CL-B Steel Round Bar prices by dimension, with $/lb for cross-size comparison.

1144 A311 CL-B-Cold Finished Round Bar currently ranges from $1.83/lb to $2.34/lb, up 3.0% over the last 7 days.

About 1144 A311 CL-B|1144 steel manufactured to ASTM A311 Class B specification. This is the formal spec that covers stress-relieved, cold-drawn carbon steel bars with guaranteed minimum mechanical properties (115 KSI tensile, 100 KSI yield for Class B). This is what you're actually getting when someone says 'Stressproof' generically. The A311 process produces bars with very low residual stress, so parts don't warp when you machine asymmetric features like keyways or flats. Machines like a dream. Machinists describe it as 4140 pre-hard strength with 12L14-like machinability. Only available in round bar due to the drawing process. Not weldable. Compare to plain 1144 (same chemistry, less stress relief, cheaper), ETD-150 (higher strength, same concept), and 4140 pre-hard (stronger but harder to machine and will move on you).
About Round Bar|The default starting stock for lathe work. It gets turned, bored, and parted into shafts, pins, bushings, spacers, and just about anything round.

Get pricing analysis in your inbox

The Material Report, twice a month.

Raw Material Market Prices
5.3%30d
Steel HRC
$1,175/short ton
$0.59/lb

Hot Rolled Coil (HRC) is the benchmark for raw steel prices.

Diameter
Diameter
$/lb
$/ft
$/ea
7d
5/16"$1.89$0.49$5.91
3.3%
3/8"$1.98$0.74$8.92
2.6%
7/16"$1.83$0.94$11.22
3.4%
1/2"$1.83$1.22$14.66
3.4%
9/16"$1.83$1.55$18.55
3.4%
5/8"$1.83$1.91$22.90
3.4%
11/16"$1.83$2.31$27.71
3.4%
3/4"$1.83$2.75$32.98
3.4%
49/64"$1.83$2.86$34.37
3.4%
13/16"$1.83$3.23$38.72
3.4%
7/8"$1.83$3.74$44.91
3.4%
1"$1.83$4.89$58.63
3.4%
1-1/64"$1.83$5.04$60.48
3.4%
1-1/16"$1.83$5.52$66.21
3.4%
1-1/8"$1.83$6.19$74.22
3.4%
1-3/16"$1.83$6.89$82.70
3.4%
1-1/4"$1.83$7.63$91.62
3.4%
1-5/16"$1.83$8.42$101.02
3.4%
1-3/8"$1.83$9.24$110.88
3.4%
1-7/16"$1.83$10.10$121.17
3.4%
1-1/2"$1.83$10.99$131.94
3.4%
1-9/16"$1.83$11.93$143.16
3.4%
1-5/8"$1.83$12.90$154.84
3.4%
1-11/16"$1.84$13.99$167.90
2.8%
1-3/4"$1.83$14.97$179.59
3.4%
1-15/16"$1.83$18.34$220.04
3.4%
2"$1.84$19.65$235.81
2.8%
2-1/8"$1.83$22.07$264.84
3.4%
2-3/16"$1.83$23.39$280.65
3.4%
2-1/4"$1.83$24.74$296.90
3.4%
2-3/8"$1.84$27.71$332.52
2.8%
2-7/16"$1.83$29.04$348.51
3.4%
2-1/2"$1.83$30.54$366.51
3.4%
2-5/8"$1.90$34.96$419.52
2.7%
2-3/4"$1.90$38.36$460.33
2.7%
2-7/8"$1.90$41.93$503.20
2.7%
2-15/16"$1.90$43.78$525.31
2.7%
3"$1.90$45.66$547.88
2.7%
3-1/8"$2.24$58.42$701.03
2.3%
3-1/4"$2.24$63.19$758.28
2.3%
3-7/16"$2.34$73.83$885.92
0.0%
3-1/2"$2.24$73.27$879.24
2.3%
3-3/4"$2.24$84.11$1009.34
2.3%
4"$2.24$95.72$1148.58
2.3%
4-1/2"$2.24$121.14$1453.67
2.3%

45 items

Prices last updated July 2026

Related Items

11L17 Round Bar12L14 Round Bar41L40 Round Bar86L20 Round Bar1008 Round Bar1010 Round Bar1018 Round Bar1045 Round Bar1117 Round Bar1141 Round Bar1144 Round Bar1144 CENTURY Round Bar1215 Round Bar4130 Round Bar4140 Round Bar4140H Round Bar4145M Round Bar4150 Round Bar4330 Round Bar4330V Round Bar4340 Round Bar4340H Round Bar8620 Round Bar8620H Round Bar9310 Round Bar52100 Round BarA36 Round BarA193 Round BarA307 Round BarA588 Round BarETD-150 Round BarLF2 Round BarLF2/A105 Round BarMaraging 250 Round BarMaraging 300 Round BarMaraging 350 Round Bar