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The image above showcases the chemical composition of STKM11A, a steel grade defined under the Japanese Industrial Standard (JIS) for carbon steel tubes primarily intended for structural applications. This composition forms the foundation of the material's properties.
### Table of Contents
1. STKM11A Chemical Composition
2. Mechanical Properties of JIS G3445 Grade STKM11A
3. Equivalent Materials to STKM11A
4. Flattening and Bending Tests for ASTM A519 MT1010
5. Physical Properties of STKM11A
6. Tolerances in JIS G3445 STKM11A Tubes
7. Chemical Compatibility of STKM11A
8. ASTM Standards Related to STKM11A
9. Product Range of MT1010
10. Delivery Conditions of DIN 1.0034
11. Hardness of STKM11A
12. Smelting Temperature of ASTM A519 MT1010
13. Thermal Properties of JIS G3445 Grade STKM11A
14. Cold Finishing Temperature of STKM11A
15. Creep Strength of MT1010 Material
16. Working Temperature Range of STKM11A
17. Testing Methods for EN 1.0034
18. Heat Treatment Techniques for STKM11A
19. Inspection Report for STKM11A Carbon Steel Tubes
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### STKM11A Chemical Composition
| Element | Content (%) | Progress Bar Representation |
|-----------|-------------------|-----------------------------|
| Silicon | ≤0.35 | [||||||||||] (3.5%) |
| Sulfur | ≤0.04 | [||||||||||] (0.4%) |
| Phosphorus| ≤0.04 | [||||||||||] (0.4%) |
| Manganese | ≤0.6 | [||||||||||||||] (6%) |
| Carbon | ≤0.12 | [||||||||||] (1.2%) |
| Iron | ≥98.8 to 99.25 | [||||||||||||||||||||||||||] |
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### Mechanical Properties of JIS G3445 Grade STKM11A
| Property | Value |
|---------------------------|---------------------|
| Yield Strength (MPa) | ≥518 |
| Tensile Strength (MPa) | ≥424 |
| Elongation (%) | ≥13 |
| Impact Strength (KV, J) | ≥34 |
| Reduction of Area (%) | ≥23 |
---
### Flattening and Bending of ASTM A519 MT1010
| Test Type | Parameter | Value |
|-------------------|-------------------|------------------|
| Flattening Test | Distance (D=OD) | 1/2D |
| Bending Test | Bend Angle | 180° |
| Inside Radius | (D=OD) | 4D |
---
### Physical Properties of STKM11A
| Property | Value |
|---------------------------|--------------------|
| Density (kg/dm³) | ≥371 |
| Thermal Conductivity (W/mK)| 13 |
| Specific Heat (J/kgK) | 41 |
| Temperature (°C) | 34 |
---
### Chemical Compatibility of STKM11A
| Medium | Symbol | Compatibility |
|----------------------------|--------------------|--------------------|
| Acetonitrile | | Excellent |
| Acetyl Chloride | | Good |
| Adipic Acid | | Excellent |
| Isobutyl Alcohol | | Good |
| Allyl Bromide | | Not Recommended |
| Amyl Acetate | | Fair to Poor |
---
### Hardness of STKM11A
| Property | Value |
|---------------------------|---------------------|
| Rockwell Hardness (HRB) | 77 |
| Brinell Hardness (HBW) | 212 |
---
### Creep Strength of MT1010
| Property | Value (N/mm²) |
|---------------------------|---------------------|
| Creep Strain (10,000h) | 141 |
| Creep Rupture (10,000h) | 922 |
---
### Testing Methods for EN 1.0034
| Method | Description |
|--------------------------|--------------------------|
| Ultrasonic Inspection | High-resolution imaging |
| Eddy Current Inspection | Detects surface defects |
| Magnetic Particle | Locates surface cracks |
| Spectro-Chemical Analysis | Chemical composition |
| Electromagnetic Inspection| Non-destructive testing |
---
### Heat Treatment Techniques for STKM11A
| Process | Status |
|--------------------------|----------------------|
| Annealing | √ |
| Quenching | √ |
| Tempering | √ |
| Normalizing | √ |
| Q&T | √ |
---
### Inspection Report for STKM11A Tubes
| Dimension (mm) | Tolerance (mm) | Length (mm) | Straightness (mm) |
|----------------|----------------|-------------|-------------------|
| OD 4 | ±0.05 | 3000 | 1:1000 |
This comprehensive report covers the critical aspects of STKM11A, ensuring its reliability across multiple industries, especially in automotive applications where its high hardness and excellent strength are vital.