TABLE OF CONTENTS Note for 8th edition: the tables in this section refer to standards that have been recently superceded by European (EN) and international (ISO) standards. The older British standards have been retained for information. Chapter 1 list equivalent designations in other systems for some alloys. For full information the relevant specifications must be consulted.
| Composition % | Limiting ruling section | Properties ( minima unless otherwise stated) | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Material | British or other standard [**] | C | Mn | Ni | Cr | Other elements | Condition [*] | mm | in | UTS MPa | Yield stress MPa | Elong. | Impact J | Hardness HB | Remarks | ||
| |||||||||||||||||
| 0.10C | BS 055M15 (En2) AISI 1010 | 0.2 max | 0.8 max |
|
| 0.05 max | AR | 150 | 6 | 310 |
| 25 |
| 121 | |||
| 0.20C | BS 070M20 AISI 1020 | 0.16 | 0.50 |
|
| P, S | N | 152 | 6 | 430 | 215 | 21 |
| 126/179 | General constructional steel suitable for welding | ||
| 0.24 | 0.90 |
|
| 0.050 max | 254 | 10 | 400 | 200 | 20 |
|
| ||||||
| CD | 13 |
 | 530 | 385 | 12 |
|
| ||||||||||
| 76 | 3 | 430 | 340 | 14 |
|
| |||||||||||
| HT | 19 |
 | 540/690 |
