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Mechanical Requirement for Metric Products(A193/A193M)
Class |
Diameter,[mm] |
Minimum Tempering Temperature, °C |
Tensile Strength,min,Mpa |
Yield Strength min,0.2% offset,Mpa |
Elongation in 4D min,% |
Reduction of Area ,min,% |
Hardness max |
|
Ferritic Steels |
||||||||
B5 4 to 6% chromium |
up to M100,in cl |
593 |
690 |
550 |
16 |
50 |
… |
|
B6 13% chromium |
up to M100, incl |
593 |
760 |
585 |
15 |
50 |
… |
|
B6X 13% chromium |
up to M100,inch |
593 |
620 |
485 |
16 |
50 |
26 HRC |
|
B7 Chromium - molybdenum |
M64 and under |
593 |
860 |
720 |
16 |
50 |
321 HB or 35 HRC |
|
over M64 and M100 |
593 |
795 |
655 |
16 |
50 |
321 HB or 35 HRC |
||
over M100 and M180 |
593 |
690 |
515 |
18 |
50 |
321 HB or 35 HRC |
||
B7N Chromium - molybdenum |
M100 and under |
620 |
690 |
550 |
18 |
50 |
235 HB or 99 HRB |
|
over M100 and M180 |
620 |
690 |
515 |
18 |
50 |
235 HB or 99 HRB |
||
B16 Chromium - molybdenum-vanadium |
M64 and under |
650 |
860 |
725 |
18 |
50 |
321 HB or 35 HRC |
|
over M64 and M100 |
650 |
760 |
655 |
17 |
45 |
321 HB or 35 HRC |
||
over M100 and M180 |
650 |
690 |
585 |
16 |
45 |
321 HB or 35 HRC |
||
Class,Diameter,mm |
Heat Threatment |
Tensile Strength,min,MPa |
Yield Strength min,0.2% offset,Mpa |
Elongation in 4 D min % |
Reduction of Area ,min % |
Hardness, max |
||
Austenitic Steels |
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Classes 1 and 1D;B8,B8M,B8P,B8LN,B8MLN, all diameters |
carbide solution treated |
515 |
205 |
30 |
50 |
223 HB or 96 HRB |
||
Class1:B8C,B8T,all diameters |
carbide solution treated |
515 |
205 |
30 |
50 |
223 HB or 96 HRB |
||
Class1A:B8A,B8CA,B8MA,B8PA,B8TA, B8LNA,B8MLNA,B8NA,B8MNA,B8MLCuNA ,all diameters |
carbide solution treated in the finished condition |
515 |
205 |
30 |
50 |
192 HB or 90 HRB |
||
Class 1B and 1D :B8N,B8MN,B8MLCuN, all diameters |
carbide solution treated |
550 |
240 |
30 |
40 |
223 HB or 96 HRB |
||
Class 1C and 1D :B8R, all diameters |
carbide solution treated |
690 |
380 |
35 |
55 |
271 HB or 28 HRC |
||
Class 1C :B8RA, all diameters |
carbide solution treated in the finished condition |
690 |
380 |
35 |
55 |
271 HB or 28 HRC |
||
Class 1C and 1D :B8S, all diameters |
carbide solution treated |
655 |
345 |
35 |
55 |
271 HB or 28 HRC |
||
Class 1C :B8SA, all diameters |
carbide solution treated in the finished condition |
655 |
345 |
35 |
55 |
271 HB or 28 HRC |
||