机壳钢板——日本标准SPCC – 厚度1.5mm或2.0mm

Material:     Mainframe Steel –JIS Standard SPCC – 1.5mm or 2.0mm Thickness
材料：        机壳钢板——日本标准SPCC – 厚度1.5mm或2.0mm

Specification:     Chemistry as follows:
Carbon – 0.12% Max
Silicon – 0.05% Max
Manganese – 0.50% Max
Phosphorous – 0.035% Max
Sulfur – 0.035% Max
Iron - Remainder
Mechanical Properties: This steel shall withstand a 180 degree bend in either direction of the grain without cracking.  Tensile strength shall be nominal 270 MPa.

Finish:  The steel shall be free from rolled in scale, pits, seams, laminations, or other harmful defects.  The surface shall be free from scratches, grain patterns, mill marks and rust.  Regular matte finish (0.9 – 1.7 micro-inches) and peak count greater than 4/mm.

要求：    化学成分要求如下：
碳Carbon – 0.12% Max
硅Silicon – 0.05% Max
锰Manganese – 0.50% Max
磷Phosphorus – 0.035% Max
硫Sulfur – 0.035% Max
铁Iron – 其余
机械性能：本钢板能承受沿晶粒任何方向180°折弯而不开裂。抗拉强度名义值为270 MPa。
表面质量：钢板应无扎痕、凹坑、裂纹、分层或其它有害缺陷。钢板表面应无擦伤、无不同晶体点阵结构、卷筒划伤、锈斑。正常的糙面精整粗糙度（0.9～1.7毫英寸），轮廓微观高点每毫米长度内大于4点。