🔍 Properties of HM3 Materials
3Cr3Mo3VNB steel code name is HM3, is a hypereutectoid steel, is a middle carbon chromium series high strength and toughness hot work die steel. The steel is an improved steel with reference to American AISI standard H10 steel and Russian TOCT standard 3X3M3Φ steel, similar to HM1 steel. China as early as the 1980s, has been included in the original Ministry of Aviation standards.
⚙️ Specification for HM3 Quenching and Tempering
The quenching temperature is 950~1000ºC, the hardness is 46~50HRC, the grain size is 10~11 grade. The tempering temperature is 500~580ºC, and the hardness is 1~1.5HRC higher than that of the quenched state. Tempering temperature 450~650ºC, hardness 42~48HRC.
❓ Frequently Asked Questions
1. What is HM3 steel and what are its equivalents?
HM3 is a middle carbon chromium series high strength hot work die steel. It is an improved version of American AISI H10 and Russian 3X3M3Φ standards.
2. What are the recommended heat treatment settings?
The quenching temperature should be between 950~1000ºC for a hardness of 46~50HRC, with tempering between 500~580ºC.
3. How does HM3 perform compared to H13 steel?
HM3 generally provides up to twice the service life of H13 steel in forging die applications and up to three times in seamless pipe production.
4. Is HM3 suitable for high-temperature applications?
Yes, it is specifically designed for high working temperature differences and is suitable for high-temperature alloy forming molds.
5. What industry benefits most from HM3 extrusion dies?
The bearing industry sees significant improvements, with service lives 4 to 7 times higher than traditional 3Cr2W8V steel.
6. Can HM3 be used for plastic molds?
Yes, it is excellent for integral hardened plastic molds where durability and precision are required.
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