Cross-Border Tooling Title Enforcement and Retained Austenite Phase Transformation Risks
Unregistered tooling title fails against PRC contractor liens; retained austenite phase shifts during ocean freight distort precision die dimensions.
Cr12Mo1V1
Meaning
Industrial specification for high-chromium metal within the Chinese GB/T 1299 standard provides the primary material base for precision stamping dies. Local suppliers often designate cr12mo1v1 as the functional equivalent to international standards like D2 or SKD11 due to its similar chemical composition. Reliability is standard.
This grade offers a combination of high wear resistance and compressive strength suited for long-life tooling components. The steel maintains its edge profile even under the severe mechanical stresses of high-speed industrial presses. It is the workhorse of the Chinese tool and die industry.
Chemical Requirement
Carbon content usually sits between one point four five and one point seven zero percent to ensure the formation of hard carbides. The presence of molybdenum and vanadium in cr12mo1v1 improves secondary hardening during tempering. Hardness is fixed.
Chromium levels of eleven to thirteen percent provide the necessary depth of hardening during the quenching process.
Supply Availability
Domestic steel mills in China produce this grade in various formats including hot-rolled bars and forged blocks. Because cr12mo1v1 is a standard offering in the local market, lead times are generally shorter than for imported specialty alloys. Access is rapid.
Procurement teams verify the chemical analysis via mill test certificates to ensure compliance with the national standard.
Processing Characteristic
Heat treatment involves heating to temperatures between one thousand and one thousand fifty degrees Celsius followed by air cooling or oil quenching. The cr12mo1v1 alloy undergoes a complex phase change that results in a stable martensitic structure. Phases shift.
Proper tempering cycles adjust the final hardness to the range required for specific industrial tasks.