STEEL ROUND BAR ----------- PROCESSING

 

TYPE
SIZE(MM)
STEEL GRADE
Carbon steel
dia.14 - dia.280
S45C,S48,S53,S20C-S55,20Mn-65Mn
Alloy steel
dia.14 - dia.280
15Cr-40Cr,20CrMo-42CrMo,20Mn2-45Mn2 40CrV,27SiMn,40MnB-45MnB
Gear steel
dia.14 - dia.280
20CrMnTiH,20CrMoH,20CrH-40CrH
Bearing steel
dia.14 - dia.280
Gcr15
Spring steel
dia.14 - dia.280
60Si2Mn, 60Si2CrA
Sucker rolled steel
dia.14 - dia.280
SCM420, SCM440
Boron steel
dia.14 - dia.280
15B36Cr,40MnB,50MnB
Abrasion resistant steel
dia.14 - dia.280
Q1,Q2,Q3

 

CHEMICAL COMPOSITION AND MECHANICAL PROPERTIES 1
GRADE
EQUIVALENT TO
CHEMICAL COMPOSITION %
MECHANICAL PROPERTIES MIN
AISI
JIS
DIN
C
Si
Mn
Cr
Mo
V
§Ò b N/mm2
§Ò s N/mm2
¦Ä %
¦× %
AK J
20Mn2
1320
SMn 420
20 Mn5
0.17-0.24
0.17-0.37
1.40-1.80
---
---
---
785
590
10
40
47
30Mn2
1330
---
30 Mn5
0.27-0.34
0.17-0.37
1.40-1.80
---
---
---
785
635
12
45
63
27SiMn
---
---
---
0.24-0.32
1.10-1.40
1.10-1.40
---
---
---
980
835
12
40
39
20Cr
5120
SCr415
20Cr4
0.18-0.24
0.17-0.37
0.50-0.80
0.70-1.00
---
---
835
540
10
40
47
40Cr
5140
SCr440
41Cr4
0.37-0.44
01.7-0.37
0.50-0.80
0.80-1.10
---
---
980
785
9
45
47
20CrMo
4119
SCM420
22CrMo4
0.17-0.24
0.17-0.37
0.40-0.70
0.80-1.10
0.15-0.25
---
885
685
12
50
78
35CrMo
4135
SCM435
34CrMo4
0.32-0.40
0.17-0.37
0.40-0.70
0.80-1.10
0.15-0.25
---
980
835
12
45
63
42CrMo
4142
SCM440
42CrMo4
0.38-0.45
0.17-0.37
0.50-0.80
0.90-1.20
0.15-0.25
---
1080
930
12
45
63
35CrMoV
---
---
---
0.30-0.38
0.17-0.37
0.40-0.70
1.00-1.30
0.20-0.30
0.10-0.20
1080
930
10
50
71
15CrMn
6150
---
50CrV4
0.12-0.18
0.17-0.37
1.10-1.40
0.47-0.70
---
---
785
590
12
50
47
20CrMnSi
---
---
---
0.17-0.23
0.90-1.20
0.80-1.10
0.80-1.10
---
---
785
635
12
45
55
20CrMnMo
---
---
---
0.17-0.23
0.17-0.37
0.90-1.20
1.10-1.40
0.20-0.30
---
1175
885
10
45
55

 

CHEMICAL COMPOSITION AND MECHANICAL PROPERTIES 2
GRADE
EQUIVALENT TO
CHEMICALE COMPOSITION
MECHANICAL PROPERTIES MIN
AISI
JIS
DIN
C
Si
Mn
P
S
Ni
Cr
Cu
§Ò b N/mm2
§Ò s N/mm2
¦Ä %
¦× %
AK J
MAX
10
1010
S10C
CK10
0.07-0.14
0.17-0.37
0.35-0.65
0.035
0.035
0.25
0.15
0.25
335
205
31
55
---
15
1015
S15C
CK15
0.12-0.19
0.17-0.37
0.35-0.65
0.035
0.035
0.25
0.25
0.25
375
225
27
55
---
20
1020
S20C
CK22
0.17-0.24
0.17-0.37
0.35-0.65
0.035
0.035
0.25
0.25
0.25
410
245
25
55
---
25
1025
S25C
1C25
0.22-0.30
0.17-0.37
0.50-0.80
0.035
0.035
0.25
0.25
0.25
450
275
23
50
71
30
1030
S30C
1C30
0.27-0.35
0.17-0.37
0.50-0.80
0.035
0.035
0.25
0.25
0.25
490
295
21
50
63
35
1035
S35C
1C35
0.32-0.40
0.17-0.37
0.50-0.80
0.035
0.035
0.25
0.25
0.25
530
315
20
45
55
40
1040
S40C
1C40
0.37-0.45
0.17-0.37
0.50-0.80
0.035
0.035
0.25
0.25
0.25
570
335
19
45
47
45
1045
S45C
1C45
0.42-0.50
0.17-0.37
0.50-0.80
0.035
0.035
0.25
0.25
0.25
600
355
16
40
39
50
1050
S50C
1C50
0.47-0.55
0.17-0.37
0.50-0.80
0.035
0.035
0.25
0.25
0.25
630
375
14
40
31
55
1055
S55C
1C55
0.52-0.60
0.17-0.37
0.50-0.80
0.035
0.035
0.25
0.25
0.25
645
380
13
35
---
60
1060
S58C
1C60
0.57-0.65
0.17-0.37
0.50-0.80
0.035
0.035
0.25
0.25
0.25
675
400
12
35
---
65
1065
SWRH67A
CK67
0.62-0.70
0.17-0.37
0.50-0.80
0.035
0.035
0.25
0.25
0.25
695
410
10
30
---
70
1070
SWRH72A
CK67
0.67-0.75
0.17-0.37
0.50-0.80
0.035
0.035
0.25
0.25
0.25
715
420
9
30
---
75
1075
SWRH77A
C75
0.72-0.80
0.17-0.37
0.50-0.80
0.035
0.035
0.25
0.25
0.25
1080
880
7
30
---
80
1080
SWRH82A
D85-2
0.77-0.85
0.17-0.37
0.50-0.80
0.035
0.035
0.25
0.25
0.25
1080
930
6
30
---
85
1084
SWRS82A
CK85
0.82-0.90
0.17-0.37
0.50-0.80
0.035
0.035
0.25
0.25
0.25
1130
980
6
30
---
40Mn
1043
SWRH42B
2C40
0.37-0.45
0.17-0.37
0.70-1.00
0.035
0.035
0.25
0.25
0.25
590
355
17
45
47
45Mn
1046
SWRH47B
2C45
0.42-0.50
0.17-0.37
0.70-1.00
0.035
0.035
0.25
0.25
0.25
620
375
15
40
39

 

 

 

ROUND BILLET
TYPE
SIZE(MM)
GRADE
Carbon steel
dia.50-250
S10C,S20C,S30C,S35C,S45C,20Mn-65Mn, ST20, ST52, SAE1019
For boiler pipe making
dia.50-250
20G,15CrMoG,12CrMoG,12Cr1MoV
For oil pipe making
dia.50-250
37Mn5,34Mn6,34Mn2V,36Mn2V,J55,N80,P110
Alloy steel
dia.50-250
20CrMo-42CrMo,37Mn,27SiMn