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ZTW40.29 is a medium density sponge iron powder with low impurity content and exhibits high consistency in chemical composition and particle size distribution. This powder is particularly suitable for alkaline coated electrodes and is considered a benchmark product in its category. It significantly enhances product performance by optimizing extrusion properties, enhancing coating stability, reducing spatter levels, providing a smoother arc, and increasing production efficiency.
Specifically, ZTW40.29 not only improves extrusion characteristics, making the manufacturing process smoother, but also ensures uniformity and stability of the coating, reducing spatter during welding. Additionally, it provides a smoother arc operation, further enhancing production efficiency. All these advantages work together to ensure the superior performance of the final product.
Powder grades for welding applications:
As a key component in the production of a wide range of welding consumables, the characteristics of iron powders often have a direct influence on both welding properties and final weld metal quality. Our sponge and atomized gradesare distinguished by particle size distribution, chemical composition, particle morphology and apparent density. Choosing iron powders with suitable characteristics for a given application will result in enhanced efficiency and overall welding performance.
Benefits:
• Wide range of iron powders developed for welding applications
• Narrow specifications
• Consistent chemical and physical properties
• Low level of impurities
• Efficient logistics solutions and smart packaging
Specification of Sponge Iron powder
ZTW40.29
| Chemical Properties（%） | Unit | Specification | |
| Min | Max | ||
| C | % | 0.01 | |
| Si | % | 0.10 | |
| Mn | % | 0.15 | |
| P | % | 0.02 | |
| S | % | 0.015 | |
| H2-Loss | % | 0.50 | |
| Physical Properties | |||
| Apparent density | g/cm3 | 2.70 | 3.50 |
| Particle size distribution（%） | |||
| ＋425um | % | 2.0 | |
| 100-425um | % | Bal. | |
| -100um | % | 10.0 | |
Specification of other iron powder for welding
Grade | Chemical composition/% | Apparent density g/cmᶟ | Particle size distribution/% | ||||||||||||||
| C | Si | Mn | P | S | V | H2-Loss | Fe | ||||||||||
Sponge iron powder | ZTW40.37 | ≤ 0.06 | ≤ 0.12 | ≤ 0.20 | ≤ 0.005 | ≤ 0.010 | ≤ 0.10 | ≤ 0.80 | ≥ 98 | 3.60-3.80 | ＋500um | ＋355um | ＋250um | ＋150um | ＋75um | ||
| 0 | 0-12 | 10-40 | 50-80 | 85-100 | |||||||||||||
ZTW 100.25 | ≤ 0.05 | ≤ 0.12 | ≤ 0.20 | ≤ 0.009 | ≤ 0.009 | ≤ 0.10 | ≤ 0.55 | ≥ 99 | 2.40-2.60 | ＋250um | ＋150um | ＋75um | ＋45um | ||||
| 0 | ≤10 | 40-80 | 70-95 | ||||||||||||||
ZTW100B | ≤ 0.07 | ≤ 0.25 | ≤ 0.20 | ≤ 0.015 | ≤ 0.015 | B | - | - | ＋150um | 75-150um | 45-75um | -45um | |||||
| 0.90-1.10 | 5 | Bal. | Bal. | 5-25 | |||||||||||||
Atomized iron powder | LAP40.30 | ≤ 0.01 | ≤ 0.10 | ≤ 0.15 | ≤ 0.02 | ≤ 0.012 | - | 0.50≤ | - | 2.80-3.20 | ＋425um | 100-425 um | -100um | ||||
| ≤2.0 | ≥70.0 | ≤10.0 | |||||||||||||||
LAP40.37 | ≤ 0.05 | ≤ 0.08 | ≤ 0.15 | ≤ 0.015 | ≤ 0.015 | - | ≤ 0.50 | - | 3.60-3.80 | ＋425um | 100-425 um | 63-150 um | -63 um | ||||
| ≤3 | ≥70.0 | 5-25 | ≤5 | ||||||||||||||
LAP 100.29 | ≤ 0.01 | ≤ 0.04 | ≤ 0.14 | ≤ 0.015 | ≤ 0.015 | - | ≤ 0.20 | ≥ 99.2 | Apparent density g/cmᶟ | Flow rate s/50g | Green density600Mpa g/cmᶟ | Particle size distribution/% | |||||
| 180-212um | 150-180um | 45-150 um | - 45 um | ||||||||||||||
| 2.95-3.10 | ≤28 | ≥7.13 | ≤1 | ≤10 | - | 15-30 | |||||||||||
Product Packing
1000kg per big flexbag and 25kg per small bag packed into one big bag.
Application
Welding electrodes, Welding wire,Cored wire,Surface coating,Foundry additive,Hardfacing,Alloy steel manufacturing.
ZTW40.29 is a medium density sponge iron powder with low impurity content and exhibits high consistency in chemical composition and particle size distribution. This powder is particularly suitable for alkaline coated electrodes and is considered a benchmark product in its category. It significantly enhances product performance by optimizing extrusion properties, enhancing coating stability, reducing spatter levels, providing a smoother arc, and increasing production efficiency.
Specifically, ZTW40.29 not only improves extrusion characteristics, making the manufacturing process smoother, but also ensures uniformity and stability of the coating, reducing spatter during welding. Additionally, it provides a smoother arc operation, further enhancing production efficiency. All these advantages work together to ensure the superior performance of the final product.
Powder grades for welding applications:
As a key component in the production of a wide range of welding consumables, the characteristics of iron powders often have a direct influence on both welding properties and final weld metal quality. Our sponge and atomized gradesare distinguished by particle size distribution, chemical composition, particle morphology and apparent density. Choosing iron powders with suitable characteristics for a given application will result in enhanced efficiency and overall welding performance.
Benefits:
• Wide range of iron powders developed for welding applications
• Narrow specifications
• Consistent chemical and physical properties
• Low level of impurities
• Efficient logistics solutions and smart packaging
Specification of Sponge Iron powder
ZTW40.29
| Chemical Properties（%） | Unit | Specification | |
| Min | Max | ||
| C | % | 0.01 | |
| Si | % | 0.10 | |
| Mn | % | 0.15 | |
| P | % | 0.02 | |
| S | % | 0.015 | |
| H2-Loss | % | 0.50 | |
| Physical Properties | |||
| Apparent density | g/cm3 | 2.70 | 3.50 |
| Particle size distribution（%） | |||
| ＋425um | % | 2.0 | |
| 100-425um | % | Bal. | |
| -100um | % | 10.0 | |
Specification of other iron powder for welding
Grade | Chemical composition/% | Apparent density g/cmᶟ | Particle size distribution/% | ||||||||||||||
| C | Si | Mn | P | S | V | H2-Loss | Fe | ||||||||||
Sponge iron powder | ZTW40.37 | ≤ 0.06 | ≤ 0.12 | ≤ 0.20 | ≤ 0.005 | ≤ 0.010 | ≤ 0.10 | ≤ 0.80 | ≥ 98 | 3.60-3.80 | ＋500um | ＋355um | ＋250um | ＋150um | ＋75um | ||
| 0 | 0-12 | 10-40 | 50-80 | 85-100 | |||||||||||||
ZTW 100.25 | ≤ 0.05 | ≤ 0.12 | ≤ 0.20 | ≤ 0.009 | ≤ 0.009 | ≤ 0.10 | ≤ 0.55 | ≥ 99 | 2.40-2.60 | ＋250um | ＋150um | ＋75um | ＋45um | ||||
| 0 | ≤10 | 40-80 | 70-95 | ||||||||||||||
ZTW100B | ≤ 0.07 | ≤ 0.25 | ≤ 0.20 | ≤ 0.015 | ≤ 0.015 | B | - | - | ＋150um | 75-150um | 45-75um | -45um | |||||
| 0.90-1.10 | 5 | Bal. | Bal. | 5-25 | |||||||||||||
Atomized iron powder | LAP40.30 | ≤ 0.01 | ≤ 0.10 | ≤ 0.15 | ≤ 0.02 | ≤ 0.012 | - | 0.50≤ | - | 2.80-3.20 | ＋425um | 100-425 um | -100um | ||||
| ≤2.0 | ≥70.0 | ≤10.0 | |||||||||||||||
LAP40.37 | ≤ 0.05 | ≤ 0.08 | ≤ 0.15 | ≤ 0.015 | ≤ 0.015 | - | ≤ 0.50 | - | 3.60-3.80 | ＋425um | 100-425 um | 63-150 um | -63 um | ||||
| ≤3 | ≥70.0 | 5-25 | ≤5 | ||||||||||||||
LAP 100.29 | ≤ 0.01 | ≤ 0.04 | ≤ 0.14 | ≤ 0.015 | ≤ 0.015 | - | ≤ 0.20 | ≥ 99.2 | Apparent density g/cmᶟ | Flow rate s/50g | Green density600Mpa g/cmᶟ | Particle size distribution/% | |||||
| 180-212um | 150-180um | 45-150 um | - 45 um | ||||||||||||||
| 2.95-3.10 | ≤28 | ≥7.13 | ≤1 | ≤10 | - | 15-30 | |||||||||||
Product Packing
1000kg per big flexbag and 25kg per small bag packed into one big bag.
Application
Welding electrodes, Welding wire,Cored wire,Surface coating,Foundry additive,Hardfacing,Alloy steel manufacturing.
