UGI® 4121
UGI® 4121 introduction
UGI® 4121 is a martensitic grade which, thanks to the addition of Molybdenum combined with a high sulphur content, provides a good compromise between corrosion resistance and machinability that is better than that of other resulphurised martensitic stainless steel grades.
UGI® 4121 general
| Property | Value |
|---|---|
| Density | Density of 7.7 g/cm³ |
UGI® 4121 thermal
| Property | Value | Comment |
|---|---|---|
| Coefficient of thermal expansion | Coefficient of thermal expansion of 0.0000115 1/K | 20 to 300°C |
| Thermal conductivity | Thermal conductivity of 30 W/(m·K) | - |
UGI® 4121 chemical
| Property | Value | Comment |
|---|---|---|
| Carbon | Carbon of 0.2 - 0.26 % | - |
| Chromium | Chromium of 12.5 - 14.0 % | - |
| Manganese | Manganese of 2.0 | max. |
| Molybdenum | Molybdenum of 1.1 - 1.5 % | - |
| Nickel | Nickel of 0.75 - 1.5 % | - |
| Phosphorus | Phosphorus of 0.04 | max. |
| Silicon | Silicon of 1.0 | max. |
| Sulfur | Sulfur of 0.15 - 0.27 % | - |
UGI® 4121 electrical
| Property | Value |
|---|---|
| Electrical resistivity | Electrical resistivity of 5.5e-07 Ω·m |
UGI® 4121 mechanical
| Property | Value | Comment |
|---|---|---|
| Elastic modulus | Elastic modulus of 215 GPa | - |
| Elongation | Elongation of 25 % | - |
| Hardness, Rockwell C | Hardness, Rockwell C of 47.0 - 50.0 [-] | After quenching + tempering 100-300°C |
| Tensile strength | Tensile strength of 776 MPa | - |
UGI® 4121 application
| Property | - | - | |||
|---|---|---|---|---|---|
| Application areas | |||||
| Corrosion properties | |||||
| General machinability | |||||
| Heat Treatment | |||||
| Other | Product | Shape | Finish | Tolerance | Dimensions (mm) |
| Turned and polished | ISO 9-10 | ⌀ 22-115 | |||
| Drawn | ISO 9-10 | ⌀ 1.8-30 | |||
| Ground | ISO 6-7-8-9 | ⌀ 1.5-70 | |||
| Hexagonal | Drawn | - | ⌀ 3.0-60 | ||
| Wire rod | Round | Pickled | - | ⌀ 5.5-32 | |
| Drawn wire | Round | Unpolished | ISO 6-7-8-9 | ⌀ 1.0-14 |
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