Chemical Composition of 1.5 Percent Manganese Steel Castings. | ||
Constituent | Requirement, Percent* | |
Grade 1 | Grade 2 and 3 | |
Carbon | 0.18 - 0.25 | 0.25 to 0.33 |
Silicon | 0.60 | 0.60 |
Manganese | 1.20 - 1.60 | 1.20 - 1.60 |
Sulphur | 0.050 | 0.050 |
Phosphorus | 0.050 | 0.050 |
Mechanical Properties of 1.5 Percent Manganese Steel Castings. | |||
Property | Requirement Grade I | Requirement Grade II | Requirement Grade III |
Tensile Strength, MPa, Min | 520 | 620 | 690 |
Yield Stress (0.2 Percent Proof Stress) MPa, Min | 320 | 370 | 495 |
Elongation, percent, Min | 16 | 13 | 13 |
Charpy, V-notch impact value, J, min | 30 | 25 | 22 |
Brinell Hardness, HB | 152-207 | 179-229 | 201-255 |