Tiyo asye JIS 3445 yo apwopriye pou machin, otomobil, bisiklèt, mèb, aparèy ak lòt pati mekanik. Klas prensipal yo se STKM11A, STKM12(A,B,C), STKM12(A,B,C), STKM(A,B,C).
Konpozisyon chimik JIS 3445 STKM11, STKM12, STKM13 ak STKM14 Tib mekanik yo se tankou tablo ki anba a:
| Klas | Konpozisyon chimik % | |||||
| C | Si | Mn | P | S | Nb oswa V | |
| STKM11A | Mwens pase oswa egal a 0.12 | Mwens pase oswa egal a 0.35 | Mwens pase oswa egal a 0.60 | Mwens pase oswa egal a 0.040 | Mwens pase oswa egal a 0.040 | ▾ |
| STKM12A | Mwens pase oswa egal a 0.20 | Mwens pase oswa egal a 0.35 | Mwens pase oswa egal a 0.60 | Mwens pase oswa egal a 0.040 | Mwens pase oswa egal a 0.040 | - |
| STKM12B | ||||||
| STKM12C | ||||||
| STKM13A | Mwens pase oswa egal a 0.25 | Mwens pase oswa egal a 0.35 | 0.30~ 0.90 |
Mwens pase oswa egal a 0.040 | Mwens pase oswa egal a 0.040 | - |
| STKM13B | ||||||
| STKM13C | ||||||
| STKM14A | Mwens pase oswa egal a 0.30 | Mwens pase oswa egal a 0.35 | 0.30~ 1.00 |
Mwens pase oswa egal a 0.040 | Mwens pase oswa egal a 0.040 | - |
| STKM14B | ||||||
| STKM14C | ||||||
Pwopriyete mekanik JIS 3445 STKM11, STKM12, STKM13 ak STKM14 Carbon Steel Mechanical Tubing yo se tankou tablo ki anba a:
| Klas | Pwopriyete mekanik | Tès aplati | Tès koube | |||
| Fòs rupture (MPa) |
Sede fòs (MPa) |
elongasyon (%) | Distans ant pati sa yo (D=OD) |
Bend Ang |
Anndan Reyon (D=OD) |
|
| No.11: Espécimen | ||||||
| STKM11A | 230 (294) |
- | 235 | 1/2D | 180 degre | 4D |
| STKM12A | 235 (343) |
218 (177) |
235 | 2/3D | 90 degre | 6D |
| STKM12B | 240 (392) |
228 (275) |
225 | 2/3D | 90 degre | 6D |
| STKM12C | 248 (471) |
236 (353) |
220 | - | - | - |
| STKM13A; | 238 (373) |
222 (216) |
230 | 2/3D | 90 degre | 6D |
| STKM13B | 245 (441) |
231 (304) |
220 | 3/4D | 90 degre | 6D |
| STKM13C | 252 (510) |
239 (382) |
215 | - | - | - |
| STKM14A | 242 (412) |
225 (245) |
225 | 3/4D | 90 degre | 6D |
| STKM14B | 251 (500) |
236 (353) |
215 | 7/8D | 90 degre | 8D |
| STKM14C | 256 (549) |
242 (412) |
215 | - | - | - |
Tolerans nan Tib JIS G3445 STKM12A/STKM12B sou dyamèt deyò:
Non 1: lè dyamèt ekstèn<50mm, tolerance 0.5mm;when outer diameter ≥50 mm,tolerance +/- 0.1mm;
Non 2: lè dyamèt eksteryè<50mm, tolerance 0.25mm;when outer diameter ≥50 mm,tolerance +/- 0.5mm;
Non 3: lè dyamèt eksteryè<25mm, tolerance 0.12mm;when 25mm ≤od ≥40 mm,tolerance +/- 0.15mm;
lè 40mm Mwens pase oswa egal a od Pi gran pase oswa egal a 50 mm, tolerans +/- 0.18mm.
