Property
Class
Designation |
Nominal
Size of Product |
Material
and Treatment |
Proof
Load Stress
MPa |
Tensile
Yield Strength, MPa, Min. |
Tensile
Ultimate Strength,
MPa, Min. |
Surface,
Max |
|
Prod.
Hardness, Rockwell
|
|
Core
|
|
Min.
|
Max.
|
|
Property
Class Indent Marking
|
|
4.6
|
M5-M100
|
low
or medium carbon steel
|
225
|
240
|
400
|
--
|
B67
|
B95
|
4.6
|
|
4.8
|
M1.6
M16
|
low
or medium carbon steel, fully or partially annealed
|
310
|
340
|
420
|
--
|
B74
|
B95
|
4.8
|
|
5.8
|
M5-M24
|
low
or medium carbon steel, cold worked
|
380
|
420
|
520
|
--
|
B82
|
B95
|
5.8
|
|
8.8
|
M16-M72
|
medium
carbon steel, quenched and tempered
|
600
|
660
|
830
|
30N56
|
C23
|
C34
|
8.8
|
|
A325M
Type 1
|
M16-M36
|
A325M
8S
|
|
8.8
|
M16-M36
|
low
carbon boron steel, quenched and tempered
|
600
|
660
|
830
|
30N56
|
C23
|
C34
|
8.8
|
|
A325M
Type 2
|
A325M
8S
|
|
A325M
Type 3
|
M16-M36
|
atmospheric
corrosion resistant steel, quenched and tempered
|
600
|
660
|
830
|
30N56
|
C23
|
C34
|
A325M
8S3
|
|
9.8
|
M1.6-M16
|
medium
carbon steel, quenched and tempered
|
650
|
720
|
900
|
30N58
|
C27
|
C36
|
9.8
|
|
9.8
|
M1.6-M16
|
low
carbon boron steel, quenched and tempered
|
650
|
720
|
900
|
30n58
|
C27
|
C36
|
9.8
|
|
10.9
|
M5
- M20
|
medium
carbon steel, quenched and tempered
|
830
|
940
|
1040
|
30N59
|
C33
|
C39
|
10.9
|
|
10.9
|
M5
- M100
|
medium
carbon alloy steel, quenched and tempered
|
830
|
940
|
1040
|
30N59
|
C33
|
C39
|
10.9
|
|
A490M
Type 1
|
A490M
10S
|
|
10.9
|
M5
-M36
|
low
carbon boron steel, quenched and tempered
|
830
|
940
|
1040
|
30N59
|
C33
|
C39
|
10.9
|
|
A490M
Type 2
|
M12
- M36
|
A490M
10S
|
|
A490M
Type 3
|
M12
- M36
|
atmospheric
corrosion resistant steel, quenched and tempered
|
830
|
940
|
1040
|
30N59
|
C33
|
C39
|
A490M
10S
|
|
12.9
|
M1.6
- M100
|
alloy
steel, quenched and tempered
|
970
|
1100
|
1220
|
30N63
|
C38
|
C44
|
12.9
|
