◇ 미국 시험 및 재료협회 규격 ( ASTM Specification ) <<  이전화면 

ASTM A653 General Requirements
1. Type Chemical and Mechanical Requirements
Type Chemical requirements,%.(max) Yield Point
min.ksi(Mpa)
Tensile
Strength
min.ksi(Mpa)
Elongation in
2 in.(50mm)
min.%
Ratio of the Bend
Diameter/Thickness
(Base metal)
CMnPSCu*
Commercial quality0.150.600.035 0.0400.20----
Lock-forming
quality
0.150.60 0.0350.0400.20----
Drawing quality0.100.500.025 0.035-----
Drawing quality
special killed
0.100.50 0.0250.035-----
Structural
Quality
Grade2300.20 -0.040.040.2033(230) 45(310)201.5
Grade2550.20-0.100.040.20 37(255)52(360)182.05
Grade2750.25-0.100.040.20 40(275)55(380)162.5
Grade340 class10.40-0.200.04 0.2050(340)65(450)12-
Grade340 class20.40-0.200.04 0.2050(340)-12-
Grade340 class30.50-0.040.04 0.2050(340)70(480)12-
Grade5500.20-0.040.040.20 80(550)82(570)--
Remarks : 1.*When copper steel is specified.min.
2. Base metal bend tests are not required for Grades D.E and F.
 
2. Weight of coating (Total Both Sides)
Type Regular Alloyed
Coating Designation G235G210G185G165G140G115 G90G60G40G30G01A60 A40A25A01
Minimum
Check
Limit
Triple-Spot Test
oz/ft²(of sheet)
2.352.101.851.651.401.15 1.900.600.400.30no minimum 0.600.400.25no minimum
Single Spot Test
oz/ft²(of sheet)
2.001.801.601.401.201.00 0.800.500.300.25no minimum 0.500.300.20no minimum
 
3. Thickness Tolerances
unit : inch 
  Thickness
4444 Width4444  
over 0.101 to
0.187, incl
over 0.075 to
0.101, incl
over 0.061 to
0.075, incl
over 0.043 to
0.061, incl
over 0.023 to
0.043, incl
0.023 and
thinner
to 32, incl0.0080.0070.0060.005 0.0040.003
over 32 to 40, incl0.0080.0080.006 0.0050.0040.003
over 40 to 60, incl0.0090.0080.006 0.0050.0040.003
over 60 to 72, incl0.0090.0090.006 0.0050.004-
 
4. Width Tolerances   5. Length Tolerances
unit : inch   
unit : inch 
WidthTolerances
over 12 to 30, incl1/8
over 30 to 48, incl3/16
over 48 to 60, incl1/4
over 60 to 72, incl5/16
LengthTolerances
over 12 to 30, incl1/8
over 30 to 60, incl1/4
over 60 to 96, incl1/2
over 96 to 120, incl3/4
over 120 to 156, incl1
over 156 to 192, incl1 1/4
over 192 to 240, incl1 1/2
over 2401 3/4


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