S15CBD
Low Carbon Steel
The surface is bright and smooth after cold drawing. The main difference with S15C is that the surface can be roughed without turning. That can be directly used for milling or grinding, which greatly reduces the processing time. its characteristics and application are same as S15C.
Low mechanical strength, good plasticity and toughness, easy molding under cold conditions, good workability under forging or standardization conditions, it is also easy cutting and good welding performance. Carburizing and cyanidation can be carried out to increase the surface hardness.
Application in the manufacture of low-strength welded parts, cold stampings, forgings and carburized parts such as bolts, washers, partitions, clutch parts, bearing parts, safety buckles, etc.
A plain carbon steel with a nominal 0.15% carbon content
Purpose
S15CBD is widely used in mechanical structural steel.
International Comparison of Materials
| EU EN | INTER ISO | USA AISI | JAPAN JIS | GERMANY DIN | CHINA GB | FRANCE AFNOR | ENGLAND BS |
|---|---|---|---|---|---|---|---|
| C15E | C15E4 | 1015 1016 | S15C | C15 Ck15 | 15 | C18RR XC12 XC15 | 040A15 080M15 CS17 |
| ITALY UNI | SPAIN UNE | SWEDEN SS | POLAND PN | FINLAND SFS | AUSTRIA ONORM | RUSSIA GOST | NORWAY NS |
|---|---|---|---|---|---|---|---|
| C15 | C16k | 1370 | 15 | 505 | RC15 | 15 | NS12142 |
**This comparison table is for reference only. The standards and grades of various countries have slightly different chemical compositions. Please refer to the database for details.**
Chemical Composition(JIS G4051)
| C(%) | Si(%) | Mn(%) | P(%) | S(%) | Cr(%) | Ni(%) | Cu(%) |
|---|---|---|---|---|---|---|---|
| 0.13-0.18 | 0.15-0.35 | 0.3-0.6 | 0≦0.03 | 0≦0.035 | 0≦0.2 | 0≦0.2 | 0≦0.3 |
Conditions of heat treatment
- Annealing: 880℃ Furnace Cooling
- Normalization: 880~870℃ Air Cooling
- Hardening: 820~870℃ Water Cooling
- Tempering: 550~650℃ Rapid Cooling
Mechanical properties
Tensile strength (kgf/mm²): ≧38
Yield strength (kgf/mm²): ≧24
Elongation (%): ≧30
Cross section reduction rate (%): ≧30
Hardness (Hb): 111~167
Size Range
| Shape | Size(mm) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Round Bar | 13 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 |
| 26 | 27 | 28 | 30 | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 45 | |
| 46 | 48 | 50 | 53 | 55 | 57 | 60 | 62 | 65 | 67 | 70 | 72 | |
| 75 | 80 | 82 | 85 | 87 | 90 | 92 | 95 | 100 | 105 | 110 | 115 | |
| 120 | 125 | 130 | 135 | 140 | 145 | 150 | 160 | 170 | 180 | 190 | 200 | |
| 210 | 220 | 230 | 240 | 250 | 260 | 270 | 280 | 290 | 295 | 305 | ||
- Steel Application
Bearing Shaft
There must be a shaft in the motor, which is mainly used to drive the motor and generate kinetic energy for other devices.The materials for bearing shaft application that we recommend are as below.