Standards Grade Size — tensile
strength		 — Charpy
Impact		 — HB —
process： LF
   surface condition： Black condition   heat treatment： Normalizing   清空
VD Grindering Annealing
ESR Rough Turned Soft Cooling
   
Standards Grade Size
 Process Surface condition Heat treatment Mechanical property HB Remarks
LF VD ESR SB SG RT TN TA SC σb
Mpa		 σs
Mpa		 δ5
%		 ψ
%		 Akv
J		 max min
 GB/T3203-1982  G20CrNiMo 80-460 √ √ - × √ - - √  ×  120    9  45  8      Size of sample:15,M is after TQT 
 GB/T3203-1982  G20CrNi2Mo 80-460 √ √ - × √ - - √  ×  100    13  45  8      Size of sample:25,M is after TQT 
 GB/T3203-1982  G20Cr2Ni4 80-460 √ √ - × √ - - √  ×  120    10  45  8      Size of sample:15,M is after TQT 
 GB/T3077-1999  20CrMnTi 80-520 √ - - √ - - - -  √  1080  850  10  45  55  217    Size of sample:15mm,Mechanical property is after quenching and tempering,HB is after annealing/tempering 
 GB/T3077-1999  30CrMnTi 80-520 √ - - √ - - - -  √  1470    9  40  47  229    Sampling,Mechanical property is after quenching and tempering,HB is after annealing/tempering 
 GB/T3077-1999  20CrNiMo 80-520 √ √ - - √ - - √  -  980  785  9  40  47  197    Size of sample:15mm,Mechanical property is after quenching and tempering,HB is after annealing/tempering 
 GB/T3077-1999  20CrMo 80-520 √ - - √ - - - -  √  885  685  12  50  78  197    Size of sample:15mm,Mechanical property is after quenching and tempering,HB is after annealing/tempering 
 GB/T3077-1999  42CrMo 80-520 √ - - √ - - - -  √  1080  930  12  45  63  217    Size of sample:25mm,Mechanical property is after quenching and tempering,HB is after annealing/tempering 
 GB/T3077-1999  20Cr 80-520 √ - - √ - - - -  √  835  540  10  40  47  179    Size of sample:15mm,Mechanical property is after quenching and tempering,HB is after annealing/tempering 
 GB/T3077-1999  40Cr 80-520 √ - - √ - - - -  √  980  785  9  45  47  207    Size of sample:25mm,Mechanical property is after quenching and tempering,HB is after annealing/tempering 
 GB/T3077-1999  35CrMoV 80-520 √ - - √ - - - √  -  1080  930  10  50  71  241    Size of sample:25mm,Mechanical property is after quenching and tempering,HB is after annealing/tempering 
 GB/T3077-1999  12CrMo 80-520 √ - - √ - - - -  √  410  265  24  60  110  179    Size of sample:30mm,Mechanical property is after quenching and tempering,HB is after annealing/tempering 
 GB/T3077-1999  15CrMo 80-520 √ - - √ - - - -  √  440  295  22  60  94  179    Size of sample:30mm,Mechanical property is after quenching and tempering,HB is after annealing/tempering 
 GB1591-88  20CrV 80-520 √ - - √ - - - √  -  835  590  12  45  55  197    Size of sample:15mm,Mechanical property is after quenching and tempering,HB is after annealing/tempering 
 GB/T3077-1999  40CrV 80-520 √ - - √ - - - √  -  885  735  10  50  71  241    Size of sample:25mm,Mechanical property is after quenching and tempering,HB is after annealing/tempering 
 GB/T3077-1999  20MnV 80-520 √ - - √ - - - √  -  785  590  10  40  55  187    Size of sample:15mm,Mechanical property is after quenching and tempering,HB is after annealing/tempering 
 GB/T3077-1999  20CrMnMo 80-520 √ - - √ - - - -  -  1180  885  10  45  55  217    Size of sample:15mm,Mechanical property is after quenching and tempering,HB is after annealing/tempering 
 GB/T3077-1999  40CrMnMo 80-520 √ - - √ - - - -  -  980  785  10  45  63  217    Size of sample:25mm,Mechanical property is after quenching and tempering,HB is after annealing/tempering 
 GB/T3077-1999  20CrMnSi 80-520 √ - - √ - - - √  -  785  635  12  45  55  207    Size of sample:25mm,Mechanical property is after quenching and tempering,HB is after annealing/tempering 
 GB/T3077-1999  35CrMnSiA 80-520 √ - - √ - - - √  -  1620  1280  9  40  31  229    Sampling,Mechanical property is after quenching and tempering,HB is after annealing/tempering 
1 / 4page
     Electroslag remelting-ESR,Black Condition-SB,Grindering-SG,Rough Turned-RT,Normalizing-TN,Annealing-TA,Soft Cooling-SC,
     tensile strength-σb Mpa,yield strength-σsMpa,elongation percentage-δ5%,reduction of area-ψ%,Charpy Impact-AkvJ,Brinell hardness-HB
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