B. base Metals: Produce door hardware units of base metal indicated, fabricated by forming method indicated, using manufacturer's standard metal alloy, composition, temper, and hardness.
基本金属材料：按照要求生产门用五金，按照要求的组件方法加工，使用制造商的标准金属合金，成分，韧度和硬度。
Studies have shown that (in the same units) the hardness of a cold-worked metal is about three times its yield stress, Y;
研究表明：（在相同的面积上）冷加工材料的硬度大约是它屈服强度的三倍；
All materials used in mold construction are to correspond to the material list and are to be stamped accordingly on the back or sides of units (Type and R. C. hardness).
模具所有结构件的材料必须符合材料清单，并且在背面或侧面刻印材料型号以及HRC硬度。
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