Product Details
JIS G3445 Carbon Steel Mechanical Tube
JIS G3445 standard applies to carbon steel tubes used in machinery and equipment, automobiles, bicycles, furniture, appliances, and other mechanical parts.
The specification of JIS 3445 Mechanical Steel Tube is listed below:
Grade: STKM11A, STKM12(A,B,C), STKM13(A,B,C), STKM14(A,B,C)
OD: 19.05mm ~ 114.3mm
WT: 2.0mm ~ 14 mm
Length: max 16000mm
The manufacturing method of JIS G3445 Mechanical Tube shall be as follows:
Hot Finished Seamless Steel Tube -S-H
Cold Finished Seamless Steel Tube -S-C
ERW Steel Tube -E-G
Hot Finished ERW Steel Tube -E-H
Cold Finished ERW Steel Tube – E-C
Butt-welded Steel Tube – B
Cold Finished Butt-welded Steel Tube -B-C
The Chemical Composition of STKM11, STKM12, STKM13 and STKM14 are as the table below:
| Grade | Chemical Composition % | |||||
| C | Si | Mn | P | S | Nb or V | |
| STKM11A | ≤0.12 | ≤0.35 | ≤0.60 | ≤0.040 | ≤0.040 | ▾ |
| STKM12A | ≤0.20 | ≤0.35 | ≤0.60 | ≤0.040 | ≤0.040 | — |
| STKM12B | ||||||
| STKM12C | ||||||
| STKM13A | ≤0.25 | ≤0.35 | 0.30~ 0.90 |
≤0.040 | ≤0.040 | — |
| STKM13B | ||||||
| STKM13C | ||||||
| STKM14A | ≤0.30 | ≤0.35 | 0.30~ 1.00 |
≤0.040 | ≤0.040 | — |
| STKM14B | ||||||
| STKM14C | ||||||
The Mechanical Properties of STKM11, STKM12, STKM13 and STKM14 are as the table below:
| Grade | Mechanical Properties | Flattening Test | Bending Test | |||
| Tensile Strength (MPa) |
Yield Strength (MPa) |
Elongation (%) | Distance between that parts (D=OD) |
Bend Angle |
Inside Radius (D=OD) |
|
| No.11: Specimen | ||||||
| STKM11A | 230 (294) |
— | 235 | 1/2D | 180° | 4D |
| STKM12A | 235 (343) |
218 (177) |
235 | 2/3D | 90° | 6D |
| STKM12B | 240 (392) |
228 (275) |
225 | 2/3D | 90° | 6D |
| STKM12C | 248 (471) |
236 (353) |
220 | — | — | — |
| STKM13A; | 238 (373) |
222 (216) |
230 | 2/3D | 90° | 6D |
| STKM13B | 245 (441) |
231 (304) |
220 | 3/4D | 90° | 6D |
| STKM13C | 252 (510) |
239 (382) |
215 | — | — | — |
| STKM14A | 242 (412) |
225 (245) |
225 | 3/4D | 90° | 6D |
| STKM14B | 251 (500) |
236 (353) |
215 | 7/8D | 90° | 8D |
| STKM14C | 256 (549) |
242 (412) |
215 | — | — | — |
Tolerances of JIS G3445 STKM12A/STKM12B Tube on Outside Diameter:
No 1: when outer diameter <50mm, tolerance 0.5mm;when outer diameter ≥50 mm,tolerance +/- 0.1mm;
No 2: when outer diameter <50mm, tolerance 0.25mm;when outer diameter ≥50 mm,tolerance +/- 0.5mm;
No 3: when outer diameter <25mm, tolerance 0.12mm;when 25mm ≤od ≥40 mm,tolerance +/- 0.15mm;
when 40mm ≤od ≥50 mm,tolerance +/- 0.18mm.
Linkun is one of the leading China Mechanical Tube manufacturers and suppliers, if you want to buy or import best high-quality jis g3445 carbon steel mechanical tube professional company, factory, seller, and exporter, or if you are checking steel brands, please feel free to contact us.
Hot Tags: jis g3445 carbon steel mechanical tube, China, manufacturers, suppliers, factory, company, exporter, seller, brands, import, buy, best, high-quality
Reviews
There are no reviews yet.