GB/T 1299-2014 Translated English of Chinese Standard. (GBT 1299-2014, GB/T1299-2014, GBT1299-2014): Tool and mould steels
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This standard specifies the classification, ordering content, size, shape, weight and allowable deviation, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of tool and mould steel. This standard is applicable to hot-rolled, forged, cold-drawn, bright steel bar and post-machining delivered steel for tool and mould. The chemical composition is also applicable to ingots, billets, their products.
Appendix A Normative Standard rating chart
Informative Comparison of designation of tool and mould steel
agreed As agreed allowable deviation analysis of iron ASTM C-value chemical analysis code Designation Main content GB/T corrosion-resistance cross-sectional cutting tool decarburization deformation after heat-treatment delivery status Designation Main features determination die-casting mould Electric arc furnace eutectic extrusion mould features and purposes furnace-controlled atmosphere Grade-1 Grade-2 Grade-2 Group-1 Group-2 hardness and wear-resistance hardness of specimen high hardenability high wear-resistance hot-extrusion mould hot-rolled flat-steel hot-work mould magnetic permeability martensitic Methods for chemical mould steel network carbide Nominal width non-alloy tool steel numeric code Designation Oil Oil Oil Oil or air pearlite structure plastic mould pre-hardened purchaser through negotiation qualification grade Quenching temperature requirements of Table round-steel and square-steel S/N Unified numeric salt bath side length solid solution spectrophotometric Standard rating chart steel and alloy steel GB/T steel shall comply suitable for manufacturing supplier and purchaser tool and mould toughness ultrasonic testing Unified numeric code Unit in millimeters vacuum arc remelted vanadium