Detailed Company Information
The price of steel has risen due to environmental regulations in China over the past few years and there has been a rapid increase in demand due to the favorable exporting conditions in the automobile industry making it more and more difficult to purchase materials for small and medium sized manufacturers. Yamakawa procures base materials from Korean POSCO and materials which have undergone primary processing from SeAH Special Steel through our own unique trading routes.
CHQ WIREproduction range：2mm-42mm
| Application | Material | Wire Drawer Process | |
|---|---|---|---|
| AISI/SAE | JIS | ||
| Wood Screw Machine Screw(Siotted) |
1008 -1010R | CH8A,CH10A | HD AIP |
| Wood Screw(+) | 1008 -1010R | CH8A,CH10A | SAIP,AIP |
| Machine Screw(+) | 1008 -1012AI 1010R |
CH8A,CH10A,CH12A | SAIP,AIP HD |
| Tapping Screw(+) | 1015-1016AI 1018-1022R |
CH18A,CH22A | SAIP AIP |
| Tubular Rivet | 1006AI 1006R |
CH6A | SAIP |
| Tubular Rivet(Drilled) | 1006AI 1006R |
CH6A | HD |
| Bolt(Automobile) | 1045 4135 |
CH45K SCM435 |
SAIP |
| Nut | 1008 -1015R 1108 - 1110 |
CH8A,CH10A,CH22A | HD |
| 1023 -1025AI 1023 -1025SI |
CH25K | SAIP | |
| 1035 - 1045 4135 - 4140 5135 - 5140 |
CH25K,CH45K SCM435,SCM440 SCr440 |
SAIP | |
| Steel Ball | 1010 -1020AI 1010 -1020SI |
CH10A,CH18A CH12A |
SAIP |
| 1010 -1015R 5115 - 5120 4115 - 4120 52100 |
CH10A,CH12A SCr415,420 SCM415,420 SUJ2 |
HD SAIP SAIP |
|
| Socket Screw | 4037 - 4042 4035 - 4140 |
SCM435,440 | SAIP |
| Ball Joint Stud | 5115 - 5120 4115 - 4120 |
SCr415,420 SCM415,420 |
SAIP |
| 5135 - 5140 4135 - 4140 |
SCr440 SCM435,440 |
||
| Piston Pin | 5015 - 5020 5115 - 5120 4115 - 4120 |
SCr415,420 SCM415,420 |
SAIP |
| Special Application (Difficult Cold Forming) Special Application (Machine and Cold Forming) |
Low-Silicon or Aluminium Killed Steel Rimmed or Free Cutting Steel |
SAIP AIP HD,SAIP |
|
CD BARproduction range：3mm-42mm
CD Bar
| Category | AISI(SAE) | JIS | Usage |
|---|---|---|---|
| Carbon steel | 1010~1060, 10B38 | CH6A~CH45K, S25C, S35C, S45C, S50C, POSMA45R | Motor Shaft / Various kinds of shafts / Piston Rods / RACK Bars (for the steering area) |
| Manganese steel | 1541 | SMn443 | Axle Shaft |
| Chrome steel | 5115, 5120 | SCr415, SCr420 | Various kinds of shafts and parts |
| Chrome-molybdenum steel | 4115, 4135, 4140 | SCM415, SCM435, SCM440 | Various kinds of shafts and parts |
| Bearing steel | 52100 | SUJ2 | Bearing, Liner Motion Shaft, Wrench Set |
| Free machining steel | 1213, 12L14 | SUM22, SUM24L | O.A. shafts / Sleeve shafts / Electronics, braking systems |
STS Bar
| Category | Standard | Usage | ||||
|---|---|---|---|---|---|---|
| KS | JIS | ASTM | DIN | |||
| Austenite family | 303 | SUS303 SUS303C |
SUS303 SUS303C |
TP303 | 1.4305 | Materials for O.A. shafts (printers, copiers), nuts, bolts and brushing automotive |
| 304 | SUS304 SUS304L SUS304HC SUS304M |
SUS304 SUS304L SUS304HC SUS304M |
TP304 TP304l 304/304l |
1.4031 1.4306 |
Materials for nuts and bolts for construction materials and ladders, tableware, and automotive parts |
|
| 316 | SUS316 SUS316L |
SUS316 SUS316L |
TP316 TP316l 316/316l |
1.4401 1.4404 |
Medical supplies, coastal building exterior decoration, chemical industry systems, paper-making industry |
|
| Martensite family | 410 | STS410 | SUS410 | TP410 | 1.4006 | For motor shafts, bolts, nuts and annealing |
| 416 | STS416 | SUS416 | TP416 | Materials for automotive parts and electronics | ||
| 420 | STS420J1 STS420J2 STS420F |
SUS420J1 SUS420J2 SUS420F |
1.4119 1.4021 |
Various kinds of shafts, medical devices, springs, tableware, knives, pins |
||
| Ferrite family | 430 | STS430 STS430F |
SUS430 SUS430F |
1.4104 | Automotive parts, electronic parts for various kinds of tanks, rivets |
|
