TZM and TZC difference
The main difference of TZM and TZC is doped element content, that is the total content of carbon, zirconium and titanium in TZM alloy is 0.71%, while TZC in molybdenum the total content of carbon, zirconium and titanium is 2.2% higher than TZM. Besides, impurities content are also higher than TZM. However, they are based on molybdenum alloy.
The mainly compositions of the TZM alloy are 0.50% titanium, 0.08% zirconium and 0.02% carbon. TZM alloy has many good properties, such as high melting point, high strength, high elastic modulus, small coefficient of linear expansion, low vapor pressure, good thermal conductivity, strong corrosion resistance and good mechanical properties at high temperature, so it can be widely used in many fields.
TZC alloy (titanium zirconium carbon alloy) compositions are as following: 1.2% titanium, 0.3% zirconium, 0.1% carbon. It has excellent high temperature strength and high recrystallization temperature and good plasticity at room temperature. It is often produced by powder metallurgy and vacuum arc melting production method.
TZM and TZC compositions and impurities content
| Grade | Compositions | Impurities content | ||||||
| C | Ti | Zr | Fe | Si | Ni | O2 | N2 | |
| TZM | 0.01-0.04 | 0.40-0.55 | 0.07-0.12 | 0.020 | 0.01 | 0.01 | 0.003 | 0.002 |
| TZC | 0.12-0.40 | 1.00-1.50 | 0.10~0.30 | 0.025 | 0.02 | 0.02 | 0.300 | － |
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