STKM13A JIS3445 Precision Seamless Steel Tube 75×3.5mm Carbon Pipe with ≥375 MPa Tensile Strength
Price:
Negotiable
MOQ:
2Tons
Delivery Time:
20days
Brand:
Joyruns
Product Description
STKM13A JIS3445 Precision Seamless Steel Tube
Product Overview
75×3.5mm carbon seamless steel pipe manufactured through cold drawing process. This precision seamless steel tube is suitable for machinery, automotive, bicycle, apparatus, and other mechanical components requiring high dimensional accuracy and structural integrity.
Chemical Composition (WT%)
| Steel Grade | C | Si | Mn | P | S |
|---|---|---|---|---|---|
| STKM 13 | ≤ 0.25 | ≤ 0.35 | 0.30 - 0.90 | ≤ 0.040 | ≤ 0.040 |
Mechanical Properties
| Standard | Steel Grade | Tensile Strength (MPa) | Yield Point (MPa) | Elongation (%) |
|---|---|---|---|---|
| JIS G3445 | STKM 13A | ≥375 | ≥215 | ≥30 |
| STKM 13B | ≥440 | ≥305 | ≥20 |
Dimensional Tolerances
| Parameter | Range (mm) | German Standard (mm) | Internal Control (mm) | High Precision (mm) |
|---|---|---|---|---|
| Outer Diameter | 4-30 | ±0.08 | ±0.05 | ±0.03 |
| 31-40 | ±0.15 | ±0.05 | ±0.03 | |
| 41-50 | ±0.20 | ±0.08 | ±0.03 | |
| 51-60 | ±0.25 | ±0.08 | ±0.03 | |
| Wall Thickness | 0.5-7 | ±10% | ±10%, Min ±0.05 | ±10%, Min ±0.03 |
Length tolerance: ±10mm. Automotive industry pipe length can be cut according to customer requirements.
Heat Treatment & Delivery Conditions
- +C: Cold drawn/hard - No heat treatment after final cold forming
- +LC: Cold drawn/soft - Limited deformation with heat treatment
- +SR: Stress relief - Applied after final cold deformation
- +A: Annealed - Controlled atmosphere furnace annealing
- +N: Normalized - Annealed above phase transition point
Product Images
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Get in Touch
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Company
Changzhou Joyruns Steel Tube CO.,LTD
Location
No.143 Qingyang North road,Tianning district. Changzhou
Contact Person
Lee