Carbon Steels 1140 is stocked by 2 North American distributors and produced by 17 large mills. Distributors will offer small quantity buys while mills will generally only sell large quantities, with delivery times anywhere from 10 to 50 weeks depending on size and form required
This material is stocked primarily in Bar Products by 2 distributors.
For distributor (small quantity) availability click here
For mill (large volume) production click here
To view all click here
Specifications
The following specifications cover Carbon Steels 1140
- ASTM A29
- ASTM A510
- ASTM A576
- SAE J1397
- SAE J403
- SAE J412
- UNS G11400
Property Results
Chemistry Data : [top]
Carbon
|
|
0.37 - 0.44 |
Manganese
|
|
0.7 - 1 |
Phosphorus
|
|
0.04 max |
Sulphur
|
|
0.08 - 0.13 |
|
Principal Design Features
|
|
This is a higher carbon, higher strength, free cutting steel. It contains sulfur to promote ease of machining.
|
|
|
Applications
|
|
Typically used for screw stock or other similar high speed, free machining operations.
|
|
|
Machinability
|
|
Machinability is good at 70% that of the 100% machinable 1112 free machining steel.
|
|
|
Forming
|
|
Formability by conventional methods is good, similar to that for 1040 steel.
|
|
|
Welding
|
|
Although 1140 steel can be welded it is not advisable to do so. The sulfur content may cause gas porosity in a weld and thus harm the properties of the steel.
|
|
|
Heat Treatment
|
|
It is advisable to normalize 1140 steel at 1650 F and slow cool before heat treating. Then heat treat at 1550 to 1650 F and water or oil quench. Follow with a tempering operation.
|
|
|
Forging
|
|
No data. Generally it is not advisable to hot work the sulfur containing steels. Consult the alloy supplier.
|
|
|
Hot Working
|
|
No data. Generally it is not advisable to hot work the sulfur containing steels. Consult the alloy supplier.
|
|
|
Cold Working
|
|
As with all of the free machining steels this steel should not be cold headed or swaged because it may fracture or crumble. It may be cold worked by other conventional methods that do not impart impact stress.
|
|
|
Annealing
|
|
Anneal at 1600 F and slow furnace cool. A stress relief anneal may be done at 1000 F.
|
|
|
Tempering
|
|
Temper at 600 to 1300 F for results similar to 1040 plain carbon steel.
|
|
|
Hardening
|
|
Hardens by cold work or by heat treatment.
|
|
Physical Data : [top]
|
|
|
Density (lb / cu. in.)
|
0.284
|
|
Specific Gravity
|
7.86
|
|
Specific Heat (Btu/lb/Deg F - [32-212 Deg F])
|
0.107
|
|
Melting Point (Deg F)
|
2650
|
|
Poissons Ratio
|
0.3
|
|
Thermal Conductivity
|
360
|
|
Mean Coeff Thermal Expansion
|
6.7
|
|
Modulus of Elasticity Tension
|
29
|
|
Modulus of Elasticity Torsion
|
11
|
Mechanical Data : [top]
|
MSO currently has no data available for this grade.
|
Videos :
|
MSO currently has no videos available for this grade.
|
Disclaimer
This information is provided "as is" and Metal Suppliers Online, Inc. makes no warranty of any kind with respect to the subject matter or accuracy of the information contained herein. Metal Suppliers Online, Inc. specifically disclaims all warranties, expressed, implied or otherwise, including without limitation, all warranties of merchantability and fitness for a particular purpose.
In no event shall Metal Suppliers Online, Inc. be liable for any special, incidental, indirect or consequential damages of any kind or any damages whatsoever resulting from loss of use, data, profits, whether or not advised of the possibility of damage, and on any theory of liability, arising out of or in connection with the use of the information contained herein.
This publication may include technical inaccuracies or typographical errors. Changes may be periodically made to the information herein.
