High-chromium Alloy Grate Bars
What is a high-chromium alloy grate bar? High-chromium alloy grate bars are the core load-bearing and heat-exchange components for high-temperature equipment such as waste incinerators, sintering machines and industrial boilers. Made from high-chromium alloy as the base material and crafted via...
- Product Introduction
What is a high-chromium alloy grate bar?
High-chromium alloy grate bars are the core load-bearing and heat-exchange components for high-temperature equipment such as waste incinerators, sintering machines and industrial boilers. Made from high-chromium alloy as the base material and crafted via alloying design and precision casting technology, they boast excellent high-temperature wear resistance, heat resistance, corrosion resistance and thermal fatigue resistance. Capable of long-term stable operation under the working conditions of 900-1200℃ high temperature, heavy load, and coexistent corrosion and wear, they are the key components to ensure the continuous operation of equipment and reduce maintenance costs.
Our Features
We are a second-generation family-owned original manufacturing plant with 20 years of professional casting expertise, founded by our parents who have been deeply rooted in the high-chromium alloy grate bars industry to this day. As the second-generation operators, we carry forward the family's craftsmanship and unwavering commitment to quality, building a fully integrated in-house production system covering raw material melting, precision casting, heat treatment and CNC precision machining.
Backed by independent R&D and stringent quality control, we offer customized high-chromium alloy grate bars with alloy compositions ranging from Cr20–30% to Ni1–7%, perfectly adapted to high-temperature and wear-resistant working conditions such as waste incinerators, sintering machines and biomass boilers. Our products boast a 2–5 times longer service life compared with ordinary heat-resistant steel. Certified to ISO9001, we provide Mill Test Certificates (MTC) complying with EN/ASTM standards for every batch of products, and implement 100% UT/MT non-destructive testing.
Core Materials & Their Functions
| Composition | Action of a component | Typical Content wt.% | Characteristics of Typical Grade | Applicable Scene |
| Chromium | Forming Cr₂O₃ oxide film to enhance high-temperature oxidation resistance, corrosion resistance, and wear resistance | 20-30 | ZG35Cr24Ni7SiN, Cr26Ni1, 25-28% Cr high-chromium cast iron |
Waste incineration, sintering machine, industrial boiler
|
| Carbon | Forming carbide-reinforced phases to balance hardness and toughness | 0.4-2.5 | High-chromium cast iron: 1.5-2.5%; High-chromium cast steel: 0.3-0.6% | Adjust according to strength and toughness requirements |
| Nickel | Stabilizing the austenite matrix to improve high-temperature toughness and thermal fatigue resistance | 1-7 | ZG35Cr24Ni7SiN(7%),Cr26Ni1(1%) | Waste incineration (high Ni), sintering machine (low Ni) |
| Silicon | Assisting in oxidation resistance and strengthening the alloy matrix | 0.6-2.0 | ZG35Cr24Ni7SiN(1.5%),Cr26Ni1(1.2%) | Various high-temperature operating conditions |
| Manganese | Preventing casting hot cracking defects | 0.5-1.5 | Most grades | General adjustment |
| Molybdenum | Enhances the high-temperature strength and red hardness of the alloy | 0.3-1.0 | HiCr26Mo (ASTM A532 Class Ⅲ Type B) | High-temperature overload working conditions |
why chosse us?
We do not use flowery language; we are a down-to-earth manufacturer that takes pride in making solid, reliable products. Each procedure, from raw material sourcing and casting to product grinding, is executed under the direct personal supervision of our factory owner. Our high-chromium alloy grate bars embody the diligent work and dedication of every employee. This, in our opinion, is the true essence of craftsmanship and premium quality.
How to Contact Us
请替换当前内容 Please give a young and hardworking entrepreneur from China an opportunity to present the best of Made in China. I firmly believe that once you experience our products, repeat orders will follow. As a genuine source factory, our high-chromium alloy grate bars are made to stand out and succeed in the global market.
Our address
Our factory is located in Tengzhou, Shandong Province, China.
Phone Number
+8613806322367
tiangong@tgmachinery.com
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