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The A.I.S.I. grade 1215 has essentially eliminated a number of similar free machining grades, such as 1212. Both 1215 and 1213 machine considerably faster than 1212 and provide good surface finish and brazing properties. These steels are difficult to weld and are not recommended for case hardening. They are generally used where mechanical properties can be sacrificed for machinability.
| Shape |
Round, Hexagon |
| Grade |
1213 |
| Tolerance |
Meets cold finished carbon steel bar manufacturing tolerances |
| Application |
Screw machine parts that are not subject to severe stresses. |
Rounds |
A limited range of sizes |
| Hexagon |
A limited range of sizes |
|
Round |
For best delivery lengths should be specified as 11'/13'. |
| Hexagon |
For best delivery lengths should be specified as 11'/13'. |
|
| Rounds, Hexagon |
Standard "as drawn" finish |
| Rounds, Hexagon |
Ground and Polished |
| Rounds, Hexagon |
Turned Ground and Polished |
| Rounds, Hexagon |
Turned and Polished |
|
| Carbon |
0.13 (Max) |
| Maganese |
0.70/1.00 |
| Phosphorus |
0.07/0.12 |
| Sulphur |
0.24/0.33 |
|
| Tensile Strength |
78,000psi |
| Yield Strength |
60,000psi |
| Elongation in 2" |
10% |
| Reduction of Area |
35% |
| Brinell Hardness |
167 |
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