... , water heater, boiler, bathtub and weldsing and managed; --Automobile fittings, shelf rain of silencer, wind brush and mould goods; --Medicine equipments ... ≤0.045 ≤0.03 ≤18.00-20.00 ≤9.00-13.00 Material performance : The specification YS(kgf/mm 2 ) TS ... ) 67.96 71.52 The specific heat( j/g.k) 0.50 0.44 Spread the temperature( w/m.k) 13.2 13.1