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| Related Specifications | |
| Australia | AS 1443 - 1994 M1030 |
| Germany | W.Nr 1.0528 C30 W.Nr 1.1178 CK30 |
| Great Britain | BS970 - Part 3 - 1991 080M30 BS970 - 1955 EN5, 6, 6a |
| Japan | JIS G 4051 S30C |
| USA | AISI C1030 ASTM A29/A29M - 91 1030 SAE 1030 UNS G 10300 |
| Chemical Composition | ||
| Min. % | Max. % | |
| Carbon | 0.25 | 0.35 |
| Silicon | 0 | 0.35 |
| Manganese | 0.30 | 0.90 |
| Phosphorous | 0 | 0.05 |
| Sulphur | 0 | 0.05 |
| Typical Mechanical Properties - Cold Drawn, Turned and Polished and Centreless Ground Condition | ||||||||||||||||||
| Cold Drawn Size mm | up to 16mm | 17 - 38mm | 39 - 63mm | Turned & Polished, & Precision Ground (all sizes) | ||||||||||||||
| Tensile Strength Mpa | Min | 560 | 540 | 520 | 500 | |||||||||||||
| Max | 850 | 740 | 710 | 630 | ||||||||||||||
| Yield Strength Mpa | Min | 440 | 430 | 410 | 250 | |||||||||||||
| Max | 670 | 600 | 570 | 350 | ||||||||||||||
| Elongation in 50mm % | Min | 10 | 11 | 12 | 20 | |||||||||||||
| Hardness HB | Min | 170 | 160 | 155 | 150 | |||||||||||||
| Max | 245 | 215 | 210 | 185 | ||||||||||||||
| Typical Mechanical Properties - Hardened by Water Quench at 850 oC - 880 oC and Tempered Between 540oC - 680 oC | ||||||||||||||||||
| Cold Drawn Size mm | up to 16mm | 17 - 40mm | 41 - 63mm | |||||||||||||||
| Tensile Strength Mpa | Min | 620 | 580 | 520 | ||||||||||||||
| Max | 760 | 730 | 650 | |||||||||||||||
| Yield Strength Mpa | Min | 420 | 365 | 300 | ||||||||||||||
| Elongation in 50mm % | Min | 13 | 16 | 17 | ||||||||||||||
| Hardness HB | Min | 185 | 175 | 150 | ||||||||||||||
| Max | 225 | 215 | 195 | |||||||||||||||
| Forging |
| Heat to 1100 oC - 1200 oC maximum, hold until temperature is uniform throughout the section and commence forging.
Do not forge below 900 oC Finished forgings may be air cooled. |
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