STEEL GRADE |
APPLIACTION | STEEL SYMBOL | CHEMICAL COMPOSITION | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
KS | JIS | DIN | AISI(SAE) |
C | Si | Mn | P | S | Cu | Ni | Cr | Ni+Cr | Mo | V | |||
LOW CARBON STEEL |
Machinery parts |
SPCC | SPCC | ST12 | A366(1012) | 0.120 Max |
- | 0.500 Max |
0.040 Max |
0.045 Max |
- | - | - | - | - | - | |
SPCD | SPCD | ST13 | A619(1008) | 0.100 Max |
- | 0.450 Max |
0.035 Max |
0.035 Max |
- | - | - | - | - | - | |||
SPCE | SPCE | ST14 | A620(1008) | 0.080 Max |
- | 0.400 Max |
0.030 Max |
0.030 Max |
- | - | - | - | - | - | |||
MEDIUM CARBON STEEL |
Retainers, Friction plates, Office-equipment parts, Clutch parts, Chain parts, Washers |
SM30C | S30C | CK30 | 1030 | 0.27 ~0.33 |
0.15 ~0.35 |
0.60 ~0.90 |
0.030 Max |
0.035 Max |
0.300 Max |
0.200 Max |
0.200 Max |
0.350 Max |
- | - | |
SM35C | S35C | CK35 | 1035 | 0.32 ~0.38 |
0.15 ~0.35 |
0.60 ~0.90 |
0.030 Max |
0.035 Max |
0.300 Max |
0.200 Max |
0.200 Max |
0.350 Max |
- | - | |||
SM45C | S45C | CK40 | 1045 | 0.42 ~0.48 |
0.15 ~0.35 |
0.60 ~0.90 |
0.030 Max |
0.035 Max |
0.300 Max |
0.200 Max |
0.200 Max |
0.350 Max |
- | - | |||
HIGH CARBON STEEL |
Measuring, Structureal parts for cameras, Chain parts, Spring, Clutch parts, Washers, Safety buckles, Safety shoes, Can openers, Hand Saws woodworking, Thompson blades, Washers, Office-equipment parts |
SM50C | S50C | CK50 | 1050 | 0.47 ~0.53 |
0.15 ~0.35 |
0.60 ~0.90 |
0.030 Max |
0.035 Max |
0.300 Max |
0.200 Max |
0.200 Max |
0.350 Max |
- | - | |
SM55C | S55C | CK55 | 1055 | 0.52 ~0.58 |
0.15 ~0.35 |
0.60 ~0.90 |
0.030 Max |
0.035 Max |
0.300 Max |
0.200 Max |
0.200 Max |
0.350 Max |
- | - | |||
SM60C | S60C | CK60 | 1060 | 0.55 ~0.65 |
0.15 ~0.35 |
0.60 ~0.90 |
0.030 Max |
0.035 Max |
0.300 Max |
0.200 Max |
0.200 Max |
- | - | - | |||
SM65C | S65C | CK65 | 1065 | 0.60 ~0.70 |
0.15 ~0.35 |
0.60 ~0.90 |
0.030 Max |
0.035 Max |
0.300 Max |
0.200 Max |
0.200 Max |
- | - | - | |||
SM70C | S70C | CK70 | 1070 | 0.65 ~0.75 |
0.15 ~0.35 |
0.60 ~0.90 |
0.030 Max |
0.035 Max |
0.300 Max |
0.200 Max |
0.200 Max |
- | - | - | |||
SM75C | S75C | CK75 | 1075 | 0.70 ~0.80 |
0.15 ~0.35 |
0.60 ~0.90 |
0.030 Max |
0.035 Max |
0.300 Max |
0.200 Max |
0.200 Max |
- | - | - | |||
SM80C | S80C | CK80 | 1080 | 0.75 ~0.85 |
0.15 ~0.35 |
0.60 ~0.90 |
0.030 Max |
0.035 Max |
0.300 Max |
0.200 Max |
0.200 Max |
- | - | - | |||
CARBON TOOL STEEL STRIP |
Razor blade, Cutlery, Spring, Knitting needles, Measuring, Gauges, Hack saws, Pen points, Round Saw, Band Saw, Clutch parts, Office-equipment parts |
STC2 | SK2 | W1-111/2 | 1.10 ~1.30 |
0.350 Max |
0.500 Max |
0.030 Max |
0.030 Max |
0.250 Max |
0.250 Max |
0.200 Max |
- | - | - | ||
STC3 | SK3 | W1-101/2 | 1.00 ~1.10 |
0.350 Max |
0.500 Max |
0.030 Max |
0.030 Max |
0.250 Max |
0.250 Max |
0.200 Max |
- | - | - | ||||
STC4 | SK4 | W1,W2-91/2 | 0.90 ~1.00 |
0.350 Max |
0.500 Max |
0.030 Max |
0.030 Max |
0.250 Max |
0.250 Max |
0.200 Max |
- | - | - | ||||
STC5 | SK5 | W1,W2-81/2 | 0.80 ~0.90 |
0.350 Max |
0.500 Max |
0.030 Max |
0.030 Max |
0.250 Max |
0.250 Max |
0.200 Max |
- | - | - | ||||
ALLOY TOOL STEEL STRIP |
Doctor blade, Cutlery, Round Saw, Band Saw for woodworking and lumbering |
STS5 | SKS5 | 0.75 ~0.85 |
0.350 Max |
0.500 Max |
0.030 Max |
0.030 Max |
0.250 Max |
0.70 ~1.30 |
0.20 ~0.50 |
- | - | - | |||
STS51 | SKS51 | L6 | 0.75 ~0.85 |
0.350 Max |
0.500 Max |
0.030 Max |
0.030 Max |
0.250 Max |
1.30 ~2.00 |
0.20 ~0.50 |
- | - | - | ||||
CHROMIUM MOLYBDENUM STEEL STRIP |
Chain parts, Office-equipment parts, Thompson blades |
SCM420 | SCM420 | 0.27 ~0.37 |
0.15 ~0.35 |
0.60 ~0.85 |
0.030 Max |
0.030 Max |
0.300 Max |
0.250 Max |
0.90 ~1.20 |
- | 0.15 ~0.30 |
- | |||
SCM435 | SCM435 | 4135 | 0.33 ~0.38 |
0.15 ~0.35 |
0.60 ~0.85 |
0.030 Max |
0.030 Max |
0.300 Max |
0.250 Max |
0.90 ~1.20 |
- | 0.15 ~0.30 |
- | ||||
SCM440 | SCM440 | 0.38 ~0.43 |
0.15 ~0.35 |
0.60 ~0.85 |
0.030 Max |
0.030 Max |
0.300 Max |
0.250 Max |
0.90 ~1.20 |
- | 0.15 ~0.30 |
- | |||||
SPRING STEEL |
Spring | SPS6 | SUP10 | 50CRV4 | 6150 | 0.47 ~0.55 |
0.15 ~0.35 |
0.65 ~0.95 |
0.035 Max |
0.035 Max |
0.350 Max |
- | 0.80 ~1.10 |
- | - | 0.15 ~0.25 |
STEEL GRADE |
STEEL SYMBOL |
APPLIACTION | CHEMICAL COMPOSITION(%) | MECHANICAL PROPERTIES | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
C | Si | Mn | P | S | Cr | Ni | Mo | YS (N/mm²) |
TS (N/mm²) |
EL (%) |
Hv | ||||
STAINLESS STEEL |
301 | Train, Auto-Parts, Spring |
≤0.15 | ≤1.0 | ≤2.0 | ≤0.045 | ≤0.030 | 16.0 ~18.0 |
6.0 ~8.0 |
- | ≤205 | ≤520 | ≥40 | ≤218 | |
304 | Electronic Parts, Auto Parts, precision Parts |
≤0.08 | ≤1.0 | ≤2.0 | ≤0.045 | ≤0.030 | 18.0∼20.0 | 8.0∼10.5 | - | ≥205 | ≥520 | ≥40 | ≤200 | ||
304L | ≤0.03 | ≤1.0 | ≤2.0 | ≤0.045 | ≤0.030 | 18.0∼20.0 | 9.0∼13.0 | - | ≥175 | ≥480 | ≥40 | ≤200 | |||
305 | Electronic Gun, VTR Guide |
≤0.12 | ≤1.0 | ≤2.0 | ≤0.045 | ≤0.030 | 17.0 ~19.0 |
10.5∼13.0 | - | ≥175 | ≥480 | ≥40 | ≤200 | ||
316 | Chemical | ≤0.08 | ≤1.0 | ≤2.0 | ≤0.045 | ≤0.030 | 16.0 ~18.0 |
10.0∼14.0 | 2 ~3 |
≥205 | ≥520 | ≥40 | ≤200 | ||
316L | ≤0.03 | ≤1.0 | ≤2.0 | ≤0.045 | ≤0.030 | 16.0 ~18.0 |
12.0∼15.0 | 2 ~3 |
≥175 | ≥480 | ≥40 | ≤200 | |||
308L | Overlay Plate for Hardfacing |
≤0.03 | ≤0.75 | ≤2.0 | ≤0.045 | ≤0.030 | 19.0 ~21.0 |
10.0∼12.0 | - | ≥205 | ≥515 | ≥40 | ≤200 | ||
309L | ≤0.03 | ≤0.75 | ≤2.0 | ≤0.045 | ≤0.030 | 22.0 ~24.0 |
12.0∼15.0 | - | ≥205 | ≥520 | ≥40 | ≤210 | |||
430 | Home Aplicance |
≤0.12 | ≤0.75 | ≤1.0 | ≤0.040 | ≤0.030 | 16.0 ~18.0 |
≤0.6 | - | ≥205 | ≥450 | ≥22 | ≤200 | ||
420J2 | Knife, Valve, Measuring Tape |
0.26 ~0.40 |
≤1.0 | ≤1.0 | ≤0.060 | ≤0.030 | 12.0∼14.0 | ≤0.6 | - | ≥225 | ≥540 | ≥18 | ≤247 | ||
409L | Exhaust System |
≤0.03 | ≤1.0 | ≤1.0 | ≤0.040 | ≤0.030 | 10.5∼11.75 | ≤0.6 | - | ≥175 | ≥360 | ≥25 | ≤175 | ||
440 | Razor, Cutter, Surgical Blade |
0.6 ~1.2 |
≤1.0 | ≤1.0 | ≤0.040 | ≤0.030 | 16.0∼18.0 | ≤0.6 | ≤0.75 | ≥245 | ≥590 | ≥15 | ≤269 |