Grade C7250
Other Names
Corresponding Standard JIS H 3100-2018
Copper and copper alloy sheets, plates and strips
Classification Copper and Copper Alloys
Properties Corrosion Resistance
C7250 Chemical Element Composition Content (%)
Component Fe Mn Ni Pb Zn Sn More
Minimum Value - - 8.5 - - 1.8 Cu:余量
Maximum Value 0.6 0.2 10.5 0.05 0.5 2.8
C7250 Mechanical Properties
condition Mark
Heat Treatment or Condition
Tensile Strength
σb
Mpa
Elongation or Extension Rate
δ
%
Hardness
HBW
Plate (PS), strip (RS); 0.1≤t<1 C7250 PS-O,C7250 RS-O Annealing (O) ≤420 ≥30 HV*
≤120
Plate (PS), strip (RS); 0.1≤t<1 C7250 PS-1/4H,C7250 RS-1/4H 1/4 Hard (1/4H) 345~515 ≥10 85~170
Sheet (PS), strip (RS); 0.1≤t<0.15 C7250 PS-1/2H,C7250 RS-1/2H 1/2 Hard (1/2H) 410~550 ≥5 ≥115
Plate (PS), Strip (RS); 0.15<t≤1 1/2 Hard (1/2H) 410~550 ≥9 115~180
Sheet (PS), strip (RS); 0.1≤t<0.15 C7250 PS-H,C7250 RS-H Hard (H) 465~625 ≥5 140~210
Plate (PS), Strip (RS); 0.15<t≤1 Hard (H) 465~625 ≥7 140~210
Plate (PS), strip (RS); 0.1≤t<1 C7250 PS-EH,C7250 RS-EH Extra Hard (EH) 515~655 ≥5 160~220
Plate (PS), strip (RS); 0.1≤t<1 C7250 PS-SH,C7250 RS-SH Spring Hardening (SH) 550~690 ≥5 170~230
Plate (PS), strip (RS); 0.1≤t<1 C7250 PS-ESH,C7250 RS-ESH Extreme Spring Hardening (ESH) 600~725 ≥5 185~240
Plate (PS), strip (RS); 0.1≤t<1 C7250 PS-SSH,C7250 RS-SSH SSH ≥690 - ≥220

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