C120U | 1.1555 Material Datasheet
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| Material Number | Material Name | Material Number (single) | Standard | Scope | Standard Status | Country | Predecessor | VDA 231-106 classification | Application temperature [°C] | |
|---|---|---|---|---|---|---|---|---|---|---|
| 1.1555 (DIN EN ISO 4957 : 2018-11) | C120U | 1.1555 | DIN EN ISO 4957 : 2018-11 | Supersedes DIN EN ISO 4957 : 2001-02 | Valid | Germany | C120U | 1.1.1 | ≤ 200 | 1) |
| 1) Remark: C120U is a water hardening (chill hardening) tool steel. It achieves in hardened condition at least 62 HRC. Application: turning chisels, scraper, drills, countersinks, special tools for watchmakers. |
Chemical Composition
| C [%] | Mn [%] | P [%] | S [%] | Si [%] | Remainder | |
|---|---|---|---|---|---|---|
| blur | blur | blur | blur | blur | blur | 1) |
| 1) Source: blur |
Material Compliance
| REACh | RoHS |
|---|---|
| blur | blur |
Mechanical Properties
| Condition | Temperature [°C] | Hardness HB | HBW | Hardness HRC | |
|---|---|---|---|---|
| blur | blur | blur | blur | 1) |
| blur | blur | blur | blur | 1) |
| blur | blur | blur | blur | 1) |
| 1) Source: blur |
Physical Properties
| Temperature [°C] | Density [g/cm³] | |
|---|---|---|
| blur | blur | 1) |
| 1) Source: blur |
Heat Treatment
| Heat Treatment | Step | Temperature [°C] | Medium | |
|---|---|---|---|---|
| blur | blur | blur | blur | 1) |
| blur | blur | blur | blur | 1) |
| blur | blur | blur | blur | 2) |
| blur | blur | blur | blur | 2) |
| 1) Source: blur | ||||
| 2) Source: blur |
Cross Reference
| Material Name | Country | Standard | |
|---|---|---|---|
| C120U | Europe | EN ISO 4957 | |
| C120U | International | ISO 4957 | |
| TC13 | India | IS 1570 : Part 6 | 1) |
| 118T3 | India | IS 1570 : Part 6 | 1) |
| 118T3 | India | IS 3748 | 1) |
| SK120 | Japan | JIS G 4401 | 2) |
| U12A-1 | Russia | 1) | |
| У12A-1 | Russia | 1) | |
| STC120 | South Korea | KS D 3751 | 1) |
| A686 Type W1 | USA | ASTM A686 | 3) |
| W1 | USA | AISI | 1) |
| W112 | USA | SAE J 438 | 1) |
| T72301 | USA | UNS | 1) |
| 1) Source: Stahlschlüssel 2016, Verlag Stahlschlüssel Wegst GmbH, Marbach | |||
| 2) Source: EN ISO 4957 : 2018-07 | |||
| 3) Source: Metals & Alloys in the Unified Numbering System, SAE/ASTM, 11th Edition, 2008 |
Producer/Supplier/Trade names
| Tradename | Supplier | |
|---|---|---|
| C120U | Stahlwerk Annahütte Max Aicher GmbH & Co. KG, Hammerau | 1) |
| 1) Source: Stahlschlüssel 2016, Verlag Stahlschlüssel Wegst GmbH, Marbach |