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Specialty steel/Carbon alloy steel
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Specialty steel/Carbon alloy steel
Special steel/ carbon alloy steel
- Alloy steel, high quality carbon steel, or high quality steel used after heat
treatment in principle
- Core basic material for heavy and chemical industry
- Collectively refers to structural steel, tool steel, special steel used for automobile,
aerospace industry, machine, etc.
-
Carbon
 
-
Chemical properties
| Carbon |
| Steel |
C |
Si |
Mn |
P |
S |
Ni |
Cr |
Cu |
| min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
| S 10 C |
0.08 |
0.13 |
0.15 |
0.35 |
0.30 |
0.60 |
- |
0.030 |
- |
0.035 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
| S 12 C |
0.10 |
0.15 |
0.15 |
0.35 |
0.30 |
0.60 |
- |
0.030 |
- |
0.035 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
| S 15 C |
0.13 |
0.18 |
0.15 |
0.35 |
0.30 |
0.60 |
- |
0.030 |
- |
0.035 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
| S 17 C |
0.15 |
0.20 |
0.15 |
0.35 |
0.30 |
0.60 |
- |
0.030 |
- |
0.035 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
| S 20 C |
0.18 |
0.23 |
0.15 |
0.35 |
0.30 |
0.60 |
- |
0.030 |
- |
0.035 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
| S 22 C |
0.20 |
0.25 |
0.15 |
0.35 |
0.30 |
0.60 |
- |
0.030 |
- |
0.035 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
| S 25 C |
0.22 |
0.28 |
0.15 |
0.35 |
0.30 |
0.60 |
- |
0.030 |
- |
0.035 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
| S 28 C |
0.25 |
0.31 |
0.15 |
0.35 |
0.60 |
0.90 |
- |
0.030 |
- |
0.035 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
| S 30 C |
0.27 |
0.33 |
0.15 |
0.35 |
0.60 |
0.90 |
- |
0.030 |
- |
0.035 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
| S 33 C |
0.30 |
0.36 |
0.15 |
0.35 |
0.60 |
0.90 |
- |
0.030 |
- |
0.035 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
| S 35 C |
0.32 |
0.38 |
0.15 |
0.35 |
0.60 |
0.90 |
- |
0.030 |
- |
0.035 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
| S 38 C |
0.35 |
0.41 |
0.15 |
0.35 |
0.60 |
0.90 |
- |
0.030 |
- |
0.035 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
| S 40 C |
0.37 |
0.43 |
0.15 |
0.35 |
0.60 |
0.90 |
- |
0.030 |
- |
0.035 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
| S 43 C |
0.40 |
0.46 |
0.15 |
0.35 |
0.60 |
0.90 |
- |
0.030 |
- |
0.035 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
| S 45 C |
0.42 |
0.48 |
0.15 |
0.35 |
0.60 |
0.90 |
- |
0.030 |
- |
0.035 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
| S 48 C |
0.45 |
0.51 |
0.15 |
0.35 |
0.60 |
0.90 |
- |
0.030 |
- |
0.035 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
| S 50 C |
0.47 |
0.53 |
0.15 |
0.35 |
0.60 |
0.90 |
- |
0.030 |
- |
0.035 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
| S 53 C |
0.50 |
0.56 |
0.15 |
0.35 |
0.60 |
0.90 |
- |
0.030 |
- |
0.035 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
| S 55 C |
0.52 |
0.58 |
0.15 |
0.35 |
0.60 |
0.90 |
- |
0.030 |
- |
0.035 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
| S 58 C |
0.55 |
0.61 |
0.15 |
0.35 |
0.60 |
0.90 |
- |
0.030 |
- |
0.035 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
| S 9 CK |
0.07 |
0.12 |
0.10 |
0.35 |
0.30 |
0.60 |
- |
0.025 |
- |
0.025 |
- |
0.20 |
- |
0.20 |
- |
0.25 |
| S 15 CK |
0.13 |
0.18 |
0.15 |
0.35 |
0.30 |
0.60 |
- |
0.025 |
- |
0.025 |
- |
0.20 |
- |
0.20 |
- |
0.25 |
| S 20 CK |
0.18 |
0.23 |
0.15 |
0.35 |
0.30 |
0.60 |
- |
0.025 |
- |
0.025 |
- |
0.20 |
- |
0.20 |
- |
0.25 |
-
Manganese / chrome /
chrome molybdenum
-
Chemical properties
Chemical properties of Manganese
| Manganese |
| Steel |
C |
Si |
Mn |
P |
S |
Ni |
Cr |
Cu |
| min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
| SMn 420 |
0.17 |
0.23 |
0.15 |
0.35 |
1.20 |
1.50 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
- |
0.35 |
- |
0.30 |
| SMn 433 |
0.30 |
0.36 |
0.15 |
0.35 |
1.20 |
1.50 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
- |
0.35 |
- |
0.30 |
| SMn 438 |
0.35 |
0.41 |
0.15 |
0.35 |
1.35 |
1.65 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
- |
0.35 |
- |
0.30 |
| SMn 443 |
0.40 |
0.46 |
0.15 |
0.35 |
1.35 |
1.65 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
- |
0.35 |
- |
0.30 |
| SMnC 420 |
0.17 |
0.23 |
0.15 |
0.35 |
1.20 |
1.50 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
0.35 |
0.70 |
- |
0.30 |
| SMnC 443 |
0.40 |
0.46 |
0.15 |
0.35 |
1.35 |
1.65 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
0.35 |
0.70 |
- |
0.30 |
Chemical properties of chrome
| chrome |
| Steel |
C |
Si |
Mn |
P |
S |
Ni |
Cr |
Cu |
| min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
| SCr 415 |
0.13 |
0.18 |
0.15 |
0.35 |
0.60 |
0.85 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
0.90 |
1.20 |
- |
0.30 |
| SCr 420 |
0.18 |
0.23 |
0.15 |
0.35 |
0.60 |
0.85 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
0.90 |
1.20 |
- |
0.30 |
| SCr 430 |
0.28 |
0.33 |
0.15 |
0.35 |
0.60 |
0.85 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
0.90 |
1.20 |
- |
0.30 |
| SCr 435 |
0.33 |
0.38 |
0.15 |
0.35 |
0.60 |
0.85 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
0.90 |
1.20 |
- |
0.30 |
| SCr 440 |
0.38 |
0.43 |
0.15 |
0.35 |
0.60 |
0.85 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
0.90 |
1.20 |
- |
0.30 |
| SCr 445 |
0.43 |
0.48 |
0.15 |
0.35 |
0.60 |
0.85 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
0.90 |
1.20 |
- |
0.30 |
Chemical properties of Chemical properties of chrome
| Chemical properties of chrome |
| steel |
C |
Si |
Mn |
P |
S |
Ni |
Cr |
Mo |
Cu |
| min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
| SCM 415 |
0.13 |
0.18 |
0.15 |
0.35 |
0.60 |
0.85 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
0.90 |
1.20 |
0.15 |
0.30 |
- |
0.30 |
| SCM 418 |
0.16 |
0.21 |
0.15 |
0.35 |
0.60 |
0.85 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
0.90 |
1.20 |
0.15 |
0.30 |
- |
0.30 |
| SCM 420 |
0.18 |
0.23 |
0.15 |
0.35 |
0.60 |
0.85 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
0.90 |
1.20 |
0.15 |
0.30 |
- |
0.30 |
| SCM 421 |
0.17 |
0.23 |
0.15 |
0.35 |
0.70 |
1.00 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
0.90 |
1.20 |
0.15 |
0.30 |
- |
0.30 |
| SCM 430 |
0.28 |
0.33 |
0.15 |
0.35 |
0.60 |
0.85 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
0.90 |
1.20 |
0.15 |
0.30 |
- |
0.30 |
| SCM 432 |
0.27 |
0.37 |
0.15 |
0.35 |
0.30 |
0.60 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
1.00 |
1.50 |
0.15 |
0.30 |
- |
0.30 |
| SCM 435 |
0.33 |
0.38 |
0.15 |
0.35 |
0.60 |
0.85 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
0.90 |
1.20 |
0.15 |
0.30 |
- |
0.30 |
| SCM 440 |
0.38 |
0.43 |
0.15 |
0.35 |
0.60 |
0.85 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
0.90 |
1.20 |
0.15 |
0.30 |
- |
0.30 |
| SCM 445 |
0.43 |
0.48 |
0.15 |
0.35 |
0.60 |
0.85 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
0.90 |
1.20 |
0.15 |
0.30 |
- |
0.30 |
| SCM 822 |
0.20 |
0.25 |
0.15 |
0.35 |
0.60 |
0.85 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
0.90 |
1.20 |
0.35 |
0.45 |
- |
0.30 |
-
hardenablility guarantee steel /
nitriding steel / bearing steel
-
Chemical properties
Chemical properties of hardenablility guarantee steel
| hardenablility guarantee steel |
| Steel |
C |
Si |
Mn |
P |
S |
Ni |
Cr |
Mo |
Cu |
| min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
| SMn 420 H |
0.16 |
0.23 |
0.15 |
0.35 |
1.15 |
1.55 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
- |
0.35 |
|
|
- |
0.30 |
| SMn 433 H |
0.29 |
0.36 |
0.15 |
0.35 |
1.15 |
1.55 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
- |
0.35 |
|
|
- |
0.30 |
| SMn 438 H |
0.34 |
0.41 |
0.15 |
0.35 |
1.30 |
1.70 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
- |
0.35 |
|
|
- |
0.30 |
| SMn 443 H |
0.39 |
0.46 |
0.15 |
0.35 |
1.30 |
1.70 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
- |
0.35 |
|
|
- |
0.30 |
| SMnC 420 H |
0.16 |
0.23 |
0.15 |
0.35 |
1.15 |
1.55 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
0.35 |
0.70 |
|
|
- |
0.30 |
| SMnC 443 H |
0.39 |
0.46 |
0.15 |
0.35 |
1.30 |
1.70 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
0.35 |
0.70 |
|
|
- |
0.30 |
| SCr 415 H |
0.12 |
0.18 |
0.15 |
0.35 |
0.55 |
0.90 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
0.85 |
1.25 |
|
|
- |
0.30 |
| SCr 420 H |
0.17 |
0.23 |
0.15 |
0.35 |
0.55 |
0.90 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
0.85 |
1.25 |
|
|
- |
0.30 |
| SCr 430 H |
0.27 |
0.34 |
0.15 |
0.35 |
0.55 |
0.90 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
0.85 |
1.25 |
|
|
- |
0.30 |
| SCr 435 H |
0.32 |
0.39 |
0.15 |
0.35 |
0.55 |
0.90 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
0.85 |
1.25 |
|
|
- |
0.30 |
| SCr 440 H |
0.37 |
0.44 |
0.15 |
0.35 |
0.55 |
0.90 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
0.85 |
1.25 |
|
|
- |
0.30 |
| SCM 415 H |
0.12 |
0.18 |
0.15 |
0.35 |
0.55 |
0.90 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
0.85 |
1.25 |
0.15 |
0.35 |
- |
0.30 |
| SCM 418 H |
0.15 |
0.21 |
0.15 |
0.35 |
0.55 |
0.90 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
0.85 |
1.25 |
0.15 |
0.35 |
- |
0.30 |
| SCM 420 H |
0.17 |
0.23 |
0.15 |
0.35 |
0.55 |
0.90 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
0.85 |
1.25 |
0.15 |
0.35 |
- |
0.30 |
| SCM 435 H |
0.32 |
0.39 |
0.15 |
0.35 |
0.55 |
0.90 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
0.85 |
1.25 |
0.15 |
0.35 |
- |
0.30 |
| SCM 440 H |
0.37 |
0.44 |
0.15 |
0.35 |
0.55 |
0.90 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
0.85 |
1.25 |
0.15 |
0.35 |
- |
0.30 |
| SCM 445 H |
0.42 |
0.49 |
0.15 |
0.35 |
0.55 |
0.90 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
0.85 |
1.25 |
0.15 |
0.35 |
- |
0.30 |
| SCM 822 H |
0.19 |
0.25 |
0.15 |
0.35 |
0.55 |
0.90 |
- |
0.030 |
- |
0.030 |
- |
0.25 |
0.85 |
1.25 |
0.15 |
0.35 |
- |
0.30 |
| SNC 415 H |
0.11 |
0.18 |
0.15 |
0.35 |
0.30 |
0.70 |
- |
0.030 |
- |
0.030 |
1.95 |
2.50 |
0.20 |
0.55 |
|
|
- |
0.30 |
| SNC 631 H |
0.26 |
0.35 |
0.15 |
0.35 |
0.30 |
0.70 |
- |
0.030 |
- |
0.030 |
2.45 |
3.00 |
0.55 |
1.05 |
|
|
- |
0.30 |
| SNC 815 H |
0.11 |
0.18 |
0.15 |
0.35 |
0.30 |
0.70 |
- |
0.030 |
- |
0.030 |
2.95 |
3.50 |
0.65 |
1.05 |
|
|
- |
0.30 |
| SNCM 220 H |
0.17 |
0.23 |
0.15 |
0.35 |
0.60 |
0.95 |
- |
0.030 |
- |
0.030 |
0.35 |
0.75 |
0.35 |
0.65 |
0.15 |
0.30 |
- |
0.30 |
| SNCM 420 H |
0.17 |
0.23 |
0.15 |
0.35 |
0.40 |
0.70 |
- |
0.030 |
- |
0.030 |
1.55 |
2.00 |
0.35 |
0.65 |
0.15 |
0.30 |
- |
0.30 |
Chemical properties of nitriding steel
| nitriding steel |
| Steel |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
AI |
| min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
| SACM 1 |
0.40 |
0.50 |
0.15 |
0350 |
- |
0.60 |
- |
0.030 |
- |
0.030 |
1.30 |
1.70 |
0.15 |
0.30 |
0.70 |
1.20 |
Chemical properties of bearing steel
| bearing steel |
| Steel |
C |
Si |
Mn |
P |
S |
Ni |
Cr |
Mo |
Cu |
| min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
| SUJ 1 |
0.95 |
1.10 |
0.15 |
0.35 |
- |
0.50 |
- |
0.025 |
- |
0.025 |
- |
0.25 |
0.90 |
1.20 |
- |
0.08 |
- |
0.25 |
| SUJ 2 |
0.95 |
1.10 |
0.15 |
0.35 |
- |
0.50 |
- |
0.025 |
- |
0.025 |
- |
0.25 |
1.30 |
1.60 |
- |
0.08 |
- |
0.25 |
| SUJ 3 |
0.95 |
1.10 |
0.40 |
0.70 |
0.90 |
1.15 |
- |
0.025 |
- |
0.025 |
- |
0.25 |
0.90 |
1.20 |
- |
0.08 |
- |
0.25 |
| SUJ 4 |
0.95 |
1.10 |
0.15 |
0.35 |
- |
0.50 |
- |
0.025 |
- |
0.025 |
- |
0.25 |
1.30 |
1.60 |
0.10 |
0.25 |
- |
0.25 |
| SUJ 5 |
0.95 |
1.10 |
0.40 |
0.70 |
0.90 |
1.15 |
- |
0.025 |
- |
0.025 |
- |
0.25 |
0.90 |
1.20 |
0.10 |
0.25 |
- |
0.25 |
-
Boron steel /
free-cutting steel / spring steel
-
Chemical properties
Chemical properties of Boron steel
| Boron steel |
| steel |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
B |
| min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
| 10B16 |
0.13 |
0.18 |
0.15 |
0.30 |
- |
1.60 |
- |
0.040 |
- |
0.050 |
|
|
|
|
0.0005 |
0.0030 |
| 15B35M |
0.32 |
0.38 |
0.15 |
0.30 |
0.90 |
1.20 |
- |
0.030 |
0.005 |
0.025 |
|
|
|
|
0.0005 |
0.0030 |
| 15B30 |
0.30 |
0.35 |
0.15 |
0.30 |
1.10 |
1.40 |
- |
0.040 |
- |
0.050 |
|
|
|
|
0.0005 |
0.0030 |
| 15B35 |
0.35 |
0.38 |
0.15 |
0.30 |
0.95 |
1.25 |
- |
0.040 |
- |
0.040 |
|
|
|
|
0.0005 |
0.0030 |
| 15B37 |
0.30 |
0.39 |
0.15 |
0.35 |
1.00 |
1.50 |
- |
0.040 |
- |
0.040 |
|
|
|
|
0.0005 |
0.0030 |
| 15B38 |
0.35 |
0.38 |
0.15 |
0.30 |
1.10 |
1.40 |
- |
0.040 |
- |
0.050 |
|
|
|
|
0.0005 |
0.0030 |
| 15B15C |
0.12 |
0.16 |
0.20 |
0.35 |
0.85 |
1.15 |
- |
0.040 |
- |
0.040 |
0.15 |
0.30 |
|
|
0.0005 |
0.0030 |
| 15B18C |
0.16 |
0.20 |
0.20 |
0.35 |
0.85 |
1.15 |
- |
0.040 |
- |
0.040 |
0.15 |
0.30 |
|
|
0.0005 |
0.0030 |
| 15B24C |
0.26 |
0.30 |
0.20 |
0.35 |
0.85 |
1.15 |
- |
0.040 |
- |
0.040 |
0.15 |
0.30 |
|
|
0.0005 |
0.0030 |
| 15B35C |
0.32 |
0.36 |
0.15 |
0.35 |
1.10 |
1.30 |
- |
0.030 |
- |
0.030 |
0.40 |
0.60 |
|
|
0.0005 |
0.0030 |
| 15B26M |
0.24 |
0.28 |
0.20 |
0.30 |
1.30 |
1.40 |
- |
0.010 |
- |
0.010 |
0.25 |
0.35 |
|
|
0.0010 |
0.0025 |
| 15B36M |
0.32 |
0.36 |
0.15 |
0.40 |
1.10 |
1.40 |
- |
0.030 |
- |
0.030 |
0.15 |
0.25 |
|
|
0.0005 |
0.0030 |
| 30MnB4 |
0.28 |
0.35 |
0.15 |
0.50 |
1.20 |
1.50 |
- |
0.045 |
- |
0.045 |
0.20 |
0.50 |
|
|
0.0005 |
0.0030 |
| SCR440B |
0.38 |
0.43 |
0.15 |
0.35 |
0.60 |
0.85 |
- |
0.030 |
- |
0.030 |
0.90 |
1.25 |
|
|
0.0005 |
0.0030 |
| 41B30M |
0.31 |
0.36 |
0.15 |
0.35 |
1.00 |
1.30 |
- |
0.030 |
- |
0.030 |
0.40 |
0.65 |
0.13 |
0.20 |
0.0005 |
0.0030 |
| SCM418B |
0.15 |
0.21 |
0.15 |
0.30 |
0.95 |
1.30 |
- |
0.030 |
- |
0.030 |
0.40 |
0.65 |
0.08 |
0.15 |
0.0005 |
0.0030 |
Chemical properties of free-cutting steel
| free-cutting steel |
| steel |
C |
Si |
Mn |
P |
S |
Ni |
Cr |
Cu |
Pb |
| min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
| SUM 11 |
0.08 |
0.13 |
0.15 |
0.35 |
0.30 |
0.60 |
- |
0.040 |
0.08 |
0.13 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
|
|
| SUM 12 |
0.08 |
0.13 |
0.15 |
0.35 |
0.60 |
0.90 |
- |
0.040 |
0.08 |
0.13 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
|
|
| SUM 21 |
- |
0.13 |
0.15 |
0.35 |
0.70 |
1.00 |
0.070 |
0.120 |
0.16 |
0.23 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
|
|
| SUM 22 |
- |
0.13 |
0.15 |
0.35 |
0.70 |
1.00 |
0.070 |
0.120 |
0.24 |
0.33 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
|
|
| SUM 22L |
- |
0.13 |
0.15 |
0.35 |
0.70 |
1.00 |
0.070 |
0.120 |
0.24 |
0.33 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
0.10 |
0.35 |
| SUM 23 |
- |
0.09 |
0.15 |
0.35 |
0.75 |
1.05 |
0.040 |
0.090 |
0.26 |
0.35 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
|
|
| SUM 23L |
- |
0.09 |
0.15 |
0.35 |
0.75 |
1.05 |
0.040 |
0.090 |
0.26 |
0.35 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
0.10 |
0.35 |
| SUM 24L |
- |
0.15 |
0.15 |
0.35 |
0.85 |
1.15 |
0.040 |
0.090 |
0.26 |
0.35 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
0.10 |
0.35 |
| SUM 25 |
- |
0.15 |
0.15 |
0.35 |
0.90 |
1.40 |
0.070 |
0.120 |
0.30 |
0.40 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
|
|
| SUM 31 |
0.14 |
0.20 |
0.15 |
0.35 |
1.00 |
1.30 |
- |
0.040 |
0.08 |
0.13 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
|
|
| SUM 31L |
0.14 |
0.20 |
0.15 |
0.35 |
1.00 |
1.30 |
- |
0.040 |
0.08 |
0.13 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
0.10 |
0.35 |
| SUM 32 |
0.12 |
0.20 |
0.15 |
0.35 |
0.60 |
1.10 |
- |
0.040 |
0.10 |
0.20 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
|
|
| SUM 41 |
0.32 |
0.39 |
0.15 |
0.35 |
1.35 |
1.65 |
- |
0.040 |
0.08 |
0.13 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
|
|
| SUM 42 |
0.37 |
0.45 |
0.15 |
0.35 |
1.35 |
1.65 |
- |
0.040 |
0.08 |
0.13 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
|
|
| SUM 43 |
0.40 |
0.48 |
0.15 |
0.35 |
1.35 |
1.65 |
- |
0.040 |
0.24 |
0.33 |
- |
0.20 |
- |
0.20 |
- |
0.30 |
|
|
Chemical properties of spring steel
| spring steel |
| steel |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Cu |
V |
B |
| min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
| SPS 1 |
0.75 |
0.90 |
0.15 |
0.35 |
0.30 |
0.60 |
- |
0.035 |
- |
0.035 |
|
|
|
|
- |
0.30 |
|
|
|
|
| SPS 3 |
0.56 |
0.64 |
1.50 |
1.80 |
0.70 |
1.00 |
- |
0.035 |
- |
0.035 |
|
|
|
|
- |
0.30 |
|
|
|
|
| SPS 4 |
0.56 |
0.64 |
1.80 |
2.20 |
0.70 |
1.00 |
- |
0.035 |
- |
0.035 |
|
|
|
|
- |
0.30 |
|
|
|
|
| SPS 5 |
0.52 |
0.60 |
0.15 |
0.35 |
0.65 |
0.95 |
- |
0.035 |
- |
0.035 |
0.65 |
0.95 |
|
|
- |
0.30 |
|
|
|
|
| SPS 5 A |
0.56 |
0.64 |
0.15 |
0.35 |
0.70 |
1.00 |
- |
0.035 |
- |
0.035 |
0.70 |
1.00 |
|
|
- |
0.30 |
|
|
|
|
| SPS 6 |
0.47 |
0.55 |
0.15 |
0.35 |
0.65 |
0.95 |
- |
0.035 |
- |
0.035 |
0.80 |
1.10 |
|
|
- |
0.30 |
0.15 |
0.25 |
|
|
| SPS 7 |
0.56 |
0.64 |
0.15 |
0.35 |
0.70 |
1.00 |
- |
0.035 |
- |
0.035 |
0.70 |
1.00 |
|
|
- |
0.30 |
|
|
0.0005 |
- |
| SPS 8 |
0.51 |
0.59 |
1.20 |
1.60 |
0.60 |
0.90 |
- |
0.035 |
- |
0.035 |
0.60 |
0.90 |
|
|
- |
0.30 |
|
|
|
|
| SPS 9 |
0.56 |
0.64 |
0.15 |
0.35 |
0.70 |
1.00 |
- |
0.035 |
- |
0.035 |
0.70 |
0.90 |
0.25 |
0.35 |
- |
0.30 |
|
|
|
|
-
hardenablility guarantee steel /
nitriding steel / bearing steel
-
Chemical properties
Chemical properties of
| 볼트용합금강 |
| steel |
C |
Si |
Mn |
P |
S |
Ni |
Cr |
Mo |
V |
| min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
| SNB 21 |
0.36 |
0.44 |
0.20 |
0.35 |
0.45 |
0.70 |
- |
0.025 |
- |
0.025 |
|
|
0.80 |
1.15 |
0.50 |
0.65 |
0.25 |
0.35 |
| SNB 22 |
0.39 |
0.46 |
0.20 |
0.35 |
0.65 |
1.10 |
- |
0.025 |
- |
0.025 |
|
|
0.75 |
1.20 |
0.15 |
0.25 |
|
|
| SNB 23 |
0.37 |
0.44 |
0.20 |
0.35 |
0.60 |
0.95 |
- |
0.025 |
- |
0.025 |
1.55 |
2.00 |
0.65 |
0.95 |
0.20 |
0.30 |
|
|
| SNB 24 |
0.37 |
0.44 |
0.20 |
0.35 |
0.70 |
0.90 |
- |
0.025 |
- |
0.025 |
1.65 |
2.00 |
0.70 |
0.95 |
0.30 |
0.40 |
|
|
| SNB 5 |
0.10 |
- |
- |
1.00 |
- |
1.00 |
- |
0.040 |
- |
0.030 |
|
|
4.00 |
6.00 |
0.40 |
0.65 |
|
|
| SNB 7 |
0.38 |
0.48 |
0.20 |
0.35 |
0.75 |
1.00 |
- |
0.040 |
- |
0.040 |
|
|
0.80 |
1.10 |
0.15 |
0.25 |
|
|
| SNB 16 |
0.36 |
0.44 |
0.20 |
0.35 |
0.45 |
0.70 |
- |
0.040 |
- |
0.040 |
|
|
0.80 |
1.15 |
0.50 |
0.65 |
0.25 |
0.35 |
체인강 화학성분
| 체인강 |
| steel |
C |
Si |
Mn |
P |
S |
| min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
| SNB 31 |
|
0.13 |
|
0.04 |
- |
0.50 |
- |
0.040 |
- |
0.040 |
| SNB 50 |
|
0.25 |
0.15 |
0.40 |
1.00 |
1.50 |
- |
0.040 |
- |
0.040 |
| SNB 70 |
|
0.36 |
0.40 |
0.55 |
1.00 |
1.90 |
- |
0.040 |
- |
0.040 |
용접구조용강화학성분
| 용접구조용강 |
| steel |
C |
Si |
Mn |
P |
S |
| min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
| SM 400 A |
- |
0.25 |
|
|
2.5×C |
- |
0.035 |
- |
0.035 |
| SM 400 B |
- |
0.22 |
- |
0.35 |
0.60 |
1.40 |
- |
0.035 |
- |
0.035 |
| SM 400 C |
- |
0.18 |
- |
0.35 |
- |
1.40 |
- |
0.035 |
- |
0.035 |
| SM 490 A |
- |
0.22 |
- |
0.55 |
- |
1.60 |
- |
0.035 |
- |
0.035 |
| SM 490 B |
- |
0.20 |
- |
0.55 |
- |
1.60 |
- |
0.035 |
- |
0.035 |
| SM 490 C |
- |
0.18 |
- |
0.55 |
- |
1.60 |
- |
0.035 |
- |
0.035 |
| SM 490YA |
- |
0.20 |
- |
0.55 |
- |
1.60 |
- |
0.035 |
- |
0.035 |
| SM 490YB |
- |
0.20 |
- |
0.55 |
- |
1.60 |
- |
0.035 |
- |
0.035 |
| SM 520 B |
- |
0.20 |
- |
0.55 |
- |
1.60 |
- |
0.035 |
- |
0.035 |
| SM 520 C |
- |
0.20 |
- |
0.55 |
- |
1.60 |
- |
0.035 |
- |
0.035 |
| SM 570 |
- |
0.18 |
- |
0.55 |
- |
1.60 |
- |
0.035 |
- |
0.035 |