HOMETECH☰
Professional supply of industrial-grade Stainless Steel Tubes, Quartz Tubes, Titanium Tubes, Copper Tubes and other pipe materials for heating elements, electric Heaters.
| Classification | Material | UL application temperature | Actual guaranteed temperature in design | Price level | Common processing methods | Surface hardness (Rockwell) | Applications |
| High temperature tube | Incoloy600 | 982°C | 900°C | 1 | High-temperature black coating, high-temperature welding and bright furnace of high-temperature annealing processed with ammonia decomposition | 77±5 | Hardly used |
| Incoloy800（NCF800） | 927°C | 850°C | 2 | High-temperature black coating, high-temperature welding and bright furnace of high-temperature annealing processed with ammonia decomposition | 77±5 | high temperature water heater welded pipes and use under the condition of poor water quality | |
| INcoloy840（NAS H840） | 927°C | 850°C | 3 | High-temperature black coating, high-temperature welding and bright furnace of high-temperature annealing processed with ammonia decomposition | 77±5 | Blackened tubes like microwave ovens, barbecues, air conditioners, drying and other blackened tubes; high-temperature welded tubes of water heaters. It has good property of oxidation resistance and corrosion resistance under high temperature working conditions. | |
| SUS 309S | 800°C | High-temperature black coating, high-temperature welding and bright furnace of high-temperature annealing processed with ammonia decomposition | 77±5 | Blackened tubes like microwave ovens, barbecues etc | |||
| SUS 321 | 760°C | 700°C | 5 | High-temperature black coating, high-temperature welding and bright furnace of high-temperature annealing processed with ammonia decomposition | 77±5 | Blackened tubes with low load like microwave ovens, barbecues etc | |
| SUS 304 | 760°C | 650°C | 6 | High-temperature black coating, high-temperature welding and bright furnace of high-temperature annealing processed with ammonia decomposition | 77±5 | Low load grill heaters | |
| partial annealing or empty tube annealing | 77±5 | used for heating elemtens applied in water heater. | |||||
| SUS 316L | 760°C | 700°C | 4 | partial annealing or empty tube annealing | 77±5 | used for heating elemtens applied in water heater. | |
| Medium or Low temperature tube | Cu (nickel-coated)|T2 | 177°C | 250°C | 7 | partial annealing or empty tube annealing（bright furnace with ammonia decomposition） | 40±10 | used for heating elemtens applied in water heater. |
| AL | 260°C | 350°C | 8 | 410°C annealing furnace of mesh belt | 30±5 | Hybrid welding or mosaic | |
| Fe(copper coated)Commonly used grade is 10# steel | 399°C | 450°C | 9 | 77±5 | Hybrid welding，mosaic or casting | ||
| Remark：1. Incoloy is a alloy steel with high percentage of nickel. 2.SUS316L, L stands for low carbon, anti-rust, can be used for water boiling； 3.1---6 represents the price from high to low. 4.Nickel-plated pipes are generally used in water, and AL pipes and Fe pipes are generally connected to the heated elements 5.The nickel-plated layer will discolor or fall off if the temperature exceeds 250°C. | |||||||
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