기계구조용 탄소강,기계구조용 합금강,비조질강,베어링강,브론첨가강,열처리강,분말고속도공구강,쾌삭강,스프링강,스테인레스강
|
★ 탄소강
|
|
SPECIFICATION
|
CHEMICAL COMPOSITION(%)
|
MECHANICAL PROPERTIES
|
|
JIS
|
ASTM
|
AISI/
SAE
|
DIN
|
C
|
Si
|
Mn
|
P
|
S
|
Cr
|
Condition
|
항복강도 (Y.S)
Kg/㎟
|
인장강도 (T.S)
Kg/㎟
|
연신율 (El.)
%
|
경도(HB)
|
|
S10C
|
|
1010
|
C10
|
0.08-0.13
|
0.15-0.35
|
0.30-0.60
|
0.03max
|
0.035max
|
|
Normalizing
|
21min
|
32min
|
33min
|
109-156
|
|
S15C
|
|
1015
|
C15
|
0.13-0.18
|
0.15-0.35
|
0.30-0.60
|
0.03max
|
0.035max
|
|
Normalizing
|
24min
|
38min
|
30min
|
111-167
|
|
S20C
|
|
1020
|
C20
|
0.18-0.23
|
0.15-0.35
|
0.30-0.60
|
0.03max
|
0.035max
|
|
Normalizing
|
25min
|
41min
|
28min
|
116-174
|
|
S25C
|
|
1025
|
CK25
|
0.22-0.28
|
0.15-0.35
|
0.30-0.60
|
0.03max
|
0.035max
|
|
Normalizing
|
27min
|
45min
|
27min
|
123-183
|
|
S30C
|
|
1030
|
C30
|
0.27-0.33
|
0.15-0.35
|
0.60-0.90
|
0.03max
|
0.035max
|
|
Normalizing
|
29min
|
48min
|
25min
|
137-197
|
|
S35C
|
|
1035
|
CK35
|
0.32-0.38
|
0.15-0.35
|
0.60-0.90
|
0.03max
|
0.035max
|
|
Normalizing
|
31min
|
52min
|
23min
|
149-207
|
|
S38C
|
|
1038
|
0.35-0.41
|
0.15-0.35
|
0.60-0.90
|
0.03max
|
0.035max
|
|
Normalizing
|
33min
|
55min
|
22min
|
156-217
|
|
S40C
|
|
1040
|
CK40
|
0.37-0.43
|
0.15-0.35
|
0.60-0.90
|
0.03max
|
0.035max
|
|
Normalizing
|
33min
|
55min
|
22min
|
156-217
|
|
S45C
|
|
CK45
|
0.42-0.48
|
0.15-0.35
|
0.60-0.90
|
0.03max
|
0.035max
|
|
Normalizing
|
35min
|
58min
|
17min
|
167-229
|
|
S48C
|
|
0.45-0.51
|
0.15-0.35
|
0.60-0.90
|
0.03max
|
0.035max
|
|
Normalizing
|
37min
|
62min
|
18min
|
179-235
|
|
S50C
|
|
1050
|
0.47-0.53
|
0.15-0.35
|
0.60-0.90
|
0.03max
|
0.035max
|
|
Normalizing
|
37min
|
62min
|
18min
|
179-235
|
|
S55C
|
|
1055
|
CK55
|
0.52-0.58
|
0.15-0.35
|
0.60-0.90
|
0.03max
|
0.035max
|
|
Normalizing
|
40min
|
66min
|
15min
|
183-255
|
|
1022
|
0.18-0.23
|
0.70-1.00
|
0.040max
|
0.050max
|
|
|
A105
|
|
0.35max
|
0.35max
|
0.60-1.05
|
0.040max
|
0.050max
|
|
Normalizing
|
25min
|
49min
|
30min
|
187max
|
|
S45CR
|
|
|
|
0.42-0.48
|
0.15-0.35
|
0.60-0.90
|
0.025max
|
0.015max
|
0.10-0.30
|
|
|
|
|
|
|
S45CS
|
|
1045
|
|
0.43-0.50
|
0.15-0.35
|
0.60-0.90
|
0.030max
|
0.02-0.04
|
0.20max
|
|
|
|
|
|
|
|
|
★ 합금강
|
|
SPECIFICATION
|
CHEMICAL COMPOSITION(%)
|
|
JIS
|
ASTM
|
AISI/
SAE
|
DIN
|
C
|
Si
|
Mn
|
P
|
S
|
Cr
|
Mo
|
NI
|
Al
|
|
SCR415H
|
|
|
0.12-0.18
|
0.15-0.35
|
0.55-0.90
|
0.03max
|
0.03max
|
0.85-1.25
|
|
|
|
SCR420H
|
|
5120H
|
|
0.17-0.23
|
0.15-0.35
|
0.55-0.90
|
0.03max
|
0.03max
|
0.85-1.25
|
|
|
|
SCR430H
|
|
5130H
|
34Cr4
|
0.27-0.34
|
0.15-0.35
|
0.55-0.90
|
0.03max
|
0.03max
|
0.85-1.25
|
|
|
|
SCR435H
|
|
5135H
|
37Cr4
|
0.32-0.39
|
0.15-0.35
|
0.55-0.90
|
0.03max
|
0.03max
|
0.85-1.25
|
|
|
|
SCR440H
|
|
5140H
|
41Cr4
|
0.37-0.44
|
0.15-0.35
|
0.55-0.90
|
0.03max
|
0.03max
|
0.85-1.25
|
|
|
|
SCM415
|
|
16CrMo4
|
0.13-0.18
|
0.15-0.35
|
0.60-0.85
|
0.03max
|
0.03max
|
0.90-1.20
|
0.15-0.35
|
|
|
|
SCM420
|
|
4118
|
20CrMo4
|
0.18-0.23
|
0.15-0.35
|
0.60-0.85
|
0.03max
|
0.03max
|
0.90-1.20
|
0.15-0.35
|
|
|
|
SCM435
|
|
4137
|
34CrMo4
|
0.33-0.38
|
0.15-0.35
|
0.60-0.85
|
0.03max
|
0.03max
|
0.90-1.20
|
0.15-0.35
|
|
|
|
SCM440
|
|
4140
|
42CrMo4
|
0.38-0.43
|
0.15-0.35
|
0.60-0.85
|
0.03max
|
0.03max
|
0.90-1.20
|
0.15-0.35
|
|
|
|
SCM415H
|
|
16CrMo4
|
0.12-0.18
|
0.15-0.35
|
0.55-0.90
|
0.03max
|
0.03max
|
0.85-1.25
|
0.15-0.35
|
|
|
|
SCM420H
|
|
4118H
|
20CrMo4
|
0.17-0.23
|
0.15-0.35
|
0.55-0.90
|
0.03max
|
0.03max
|
0.85-1.25
|
0.15-0.35
|
|
|
|
SCM435H
|
|
4137H
|
34CrMo4
|
0.32-0.39
|
0.15-0.35
|
0.55-0.90
|
0.03max
|
0.03max
|
0.85-1.25
|
0.15-0.35
|
|
|
|
SCM440H
|
|
4140H
|
42CrMo4
|
0.37-0.44
|
0.15-0.35
|
0.55-0.90
|
0.03max
|
0.03max
|
0.85-1.25
|
0.15-0.35
|
|
|
|
SCM822H
|
|
0.19-0.25
|
0.15-0.35
|
0.55-0.90
|
0.03max
|
0.03max
|
0.85-1.25
|
0.35-0.45
|
|
|
|
SNC631H
|
|
0.26-0.35
|
0.15-0.35
|
0.30-0.70
|
0.03max
|
0.03max
|
0.55-1.05
|
2.45-3.00
|
|
|
SNC815H
|
|
0.11-0.18
|
0.15-0.35
|
0.30-0.70
|
0.03max
|
0.03max
|
0.65-1.05
|
2.95-3.50
|
|
|
SNCM220H
|
|
8620H
|
0.17-0.23
|
0.15-0.35
|
0.60-0.95
|
0.03max
|
0.03max
|
0.35-0.65
|
0.15-0.30
|
0.35-0.75
|
|
|
SNCM420H
|
4320H
|
0.17-0.23
|
0.15-0.35
|
0.40-0.70
|
0.03max
|
0.03max
|
0.35-0.65
|
0.15-0.30
|
1.55-2.00
|
|
|
SNCM439
|
|
4340
|
|
0.36-0.43
|
0.15-0.35
|
0.60-0.90
|
0.03max
|
0.03max
|
0.60-1.00
|
0.15-0.30
|
1.60-2.00
|
|
|
SNCM815
|
|
|
|
0.12-0.18
|
0.15-0.35
|
0.30-0.60
|
0.03max
|
0.03max
|
0.70-1.00
|
0.15-0.30
|
4.00-4.50
|
|
|
SMn420H
|
|
1522H
|
|
0.16-0.23
|
0.15-0.35
|
1.15-1.55
|
0.03max
|
0.03max
|
|
|
|
|
|
SMn443H
|
|
1541H
|
|
0.39-0.46
|
0.15-0.35
|
1.30-1.70
|
0.03max
|
0.03max
|
|
|
|
|
|
SACM645
|
|
|
41CrAlMo7
|
0.40-0.50
|
0.15-0.50
|
0.60max
|
0.03max
|
0.03max
|
1.30-1.70
|
0.15-0.30
|
|
0.70-1.20
|
|
|
|
★ 비조질강
|
|
SPECIFICATION
|
CHEMICAL COMPOSITION(%)
|
MECHANICAL PROPERTIES
|
|
C
|
Si
|
Mn
|
P
|
S
|
V
|
Ti
|
기타
|
Condition
|
항복강도 (Y.S)
Kg/㎟
|
인장강도 (T.S)
Kg/㎟
|
연신율 (El.)
%
|
단면
감소율(R.A)
%
|
경도
(HB)
|
충격
(Impact
Value)
J/㎟
|
|
PNCH7
|
0.15-0.21
|
0.15-0.30
|
1.10-1.60
|
0.03
max
|
0.03
max
|
|
|
|
|
|
|
|
|
|
POSMA33P
|
0.29-0.36
|
0.30-0.60
|
1.30-1.80
|
0.03
max
|
0.03
max
|
0.13-0.17
|
|
|
|
|
|
|
|
|
|
|
POSMA40
|
0.35-0.45
|
0.40-0.90
|
0.80-1.20
|
0.02
max
|
0.02-0.08
|
0.08-0.12
|
0.01-0.10
|
Mo:0.10max
N:0.006-0.012
|
As rolled
|
45min
|
75min
|
20min
|
45min
|
200min
|
50min
|
|
POSMA45S
|
0.44-0.50
|
0.50-0.70
|
1.00-1.40
|
0.03
max
|
0.03
max
|
0.08-0.15
|
0.01-0.05
|
Cr:0.05-0.20
N:0.005-0.015
|
|
POSMA45R
|
0.43-0.47
|
0.20-0.40
|
1.10-1.50
|
0.03
max
|
0.03-0.06
|
0.09-0.11
|
0.01-0.03
|
Cr:0.05-0.15
N:0.006-0.012
Ni:0.05-0.20
|
|
|
|
|
|
|
|
|
|
|
★ 탄소강
|
|
SPECIFICATION
|
CHEMICAL COMPOSITION(%)
|
MECHANICAL PROPERTIES
|
|
JIS
|
ASTM
|
AISI/
SAE
|
DIN
|
C
|
Si
|
Mn
|
P
|
S
|
Cr
|
Condition
|
항복강도 (Y.S)
Kg/㎟
|
인장강도 (T.S)
Kg/㎟
|
연신율 (El.)
%
|
경도(HB)
|
|
S10C
|
|
1010
|
C10
|
0.08-0.13
|
0.15-0.35
|
0.30-0.60
|
0.03max
|
0.035max
|
|
Normalizing
|
21min
|
32min
|
33min
|
109-156
|
|
S15C
|
|
1015
|
C15
|
0.13-0.18
|
0.15-0.35
|
0.30-0.60
|
0.03max
|
0.035max
|
|
Normalizing
|
24min
|
38min
|
30min
|
111-167
|
|
S20C
|
|
1020
|
C20
|
0.18-0.23
|
0.15-0.35
|
0.30-0.60
|
0.03max
|
0.035max
|
|
Normalizing
|
25min
|
41min
|
28min
|
116-174
|
|
S25C
|
|
1025
|
CK25
|
0.22-0.28
|
0.15-0.35
|
0.30-0.60
|
0.03max
|
0.035max
|
|
Normalizing
|
27min
|
45min
|
27min
|
123-183
|
|
S30C
|
|
1030
|
C30
|
0.27-0.33
|
0.15-0.35
|
0.60-0.90
|
0.03max
|
0.035max
|
|
Normalizing
|
29min
|
48min
|
25min
|
137-197
|
|
S35C
|
|
1035
|
CK35
|
0.32-0.38
|
0.15-0.35
|
0.60-0.90
|
0.03max
|
0.035max
|
|
Normalizing
|
31min
|
52min
|
23min
|
149-207
|
|
S38C
|
|
1038
|
0.35-0.41
|
0.15-0.35
|
0.60-0.90
|
0.03max
|
0.035max
|
|
Normalizing
|
33min
|
55min
|
22min
|
156-217
|
|
S40C
|
|
1040
|
CK40
|
0.37-0.43
|
0.15-0.35
|
0.60-0.90
|
0.03max
|
0.035max
|
|
Normalizing
|
33min
|
55min
|
22min
|
156-217
|
|
S45C
|
|
CK45
|
0.42-0.48
|
0.15-0.35
|
0.60-0.90
|
0.03max
|
0.035max
|
|
Normalizing
|
35min
|
58min
|
17min
|
167-229
|
|
S48C
|
|
0.45-0.51
|
0.15-0.35
|
0.60-0.90
|
0.03max
|
0.035max
|
|
Normalizing
|
37min
|
62min
|
18min
|
179-235
|
|
S50C
|
|
1050
|
0.47-0.53
|
0.15-0.35
|
0.60-0.90
|
0.03max
|
0.035max
|
|
Normalizing
|
37min
|
62min
|
18min
|
179-235
|
|
S55C
|
|
1055
|
CK55
|
0.52-0.58
|
0.15-0.35
|
0.60-0.90
|
0.03max
|
0.035max
|
|
Normalizing
|
40min
|
66min
|
15min
|
183-255
|
|
1022
|
0.18-0.23
|
0.70-1.00
|
0.040max
|
0.050max
|
|
|
A105
|
|
0.35max
|
0.35max
|
0.60-1.05
|
0.040max
|
0.050max
|
|
Normalizing
|
25min
|
49min
|
30min
|
187max
|
|
S45CR
|
|
|
|
0.42-0.48
|
0.15-0.35
|
0.60-0.90
|
0.025max
|
0.015max
|
0.10-0.30
|
|
|
|
|
|
|
S45CS
|
|
1045
|
|
0.43-0.50
|
0.15-0.35
|
0.60-0.90
|
0.030max
|
0.02-0.04
|
0.20max
|
|
|
|
|
|
|
|
|
|
★ 베어링강 |
|
SPECIFICATION
|
CHEMICAL COMPOSITION(%)
|
|
JIS
|
AISI/
SAE
|
DIN
|
C
|
Si
|
Mn
|
P
|
S
|
Ni
|
Cr
|
Mo
|
비고
|
|
SUJ2
|
|
0.95-1.10
|
0.15-0.35
|
0.50max
|
0.025max
|
0.025max
|
0.25max
|
1.30-1.60
|
|
|
|
POS55CR
|
|
0.55-0.58
|
0.15-0.35
|
0.75-0.90
|
0.025max
|
0.015max
|
0.20max
|
0.10-0.20
|
|
Cr미소첨가
|
|
|
|
★ 보론강
|
|
SPECIFICATION
|
CHEMICAL COMPOSITION(%)
|
|
JIS
|
AISI/
SAE
|
DIN
|
C
|
Si
|
Mn
|
P
|
Cr
|
S
|
B
|
|
S35CB
|
10B35
|
0.32-0.38
|
0.15-0.35
|
0.65-0.90
|
0.03max
|
|
0.03max
|
0.0005-0.003
|
|
S45CB
|
10B45
|
|
0.42-0.48
|
0.15-0.35
|
0.60-0.90
|
0.03max
|
|
0.03max
|
|
|