HK40 high-temperature alloy cast grate bars feature outstanding high-temperature creep resistance, oxidation resistance and thermal fatigue performance, customized as core bearing and combustion parts for municipal solid waste, industrial waste and hazardous waste incineration boilers under long-term ultra-high temperature and alternating thermal load.
Product Specifications
Product: HK40 Creep Resistant High Temperature Cast Grate Bars
MOQ: 1 piece
Model NO: OEM Customized matched with incinerator boiler models
Size: Fully manufactured in accordance with customer equipment drawings, assembly dimensions and load parameters
Machining Tolerance: ±0.02mm
Material: HK40 heat-resistant cast alloy (ASTM A608 HK-40, ZG40Cr25Ni20)
Application: Municipal waste incineration boiler, industrial garbage incinerator, hazardous waste combustion furnace, biomass incineration equipment
Surface Treatment: Homogenization solution heat treatment, shot blasting, precision machining of assembly positioning surfaces
Manufacturing Process: Precision sand casting, high-temperature stabilizing annealing, finish machining
Factory: Professional high-nickel heat-resistant alloy casting manufacturer for incineration power plant
After-sales Service: 24-hour online professional technical support
Warranty: Quality guaranteed under rated incineration working temperature
Certification: ISO 9001, CE
Standard: ASTM A608, GB/T 8492
Inspection: High-temperature creep test, thermal shock cycle test, oxidation resistance test, high-temperature tensile test, metallographic analysis, UT non-destructive flaw inspection, full dimensional check
Application Scope: Moving grate bars, fixed grate bars, segmented grate blocks for waste incineration boilers, bear high-temperature garbage combustion, ash scouring and frequent cold-hot alternation
Delivery Time: 18–38 working days, negotiable for large batch orders
Transport Package: Steel frame reinforced seaworthy wooden case, anti-rust, shockproof, anti-deformation protection for grate tooth structures
Advantages: Excellent long-term creep resistance at high temperature, anti-oxidation & anti-scaling, superior thermal fatigue resistance, anti-deformation & anti-fracture under continuous thermal load, long service life in corrosive flue gas environment
Typical Chemical Composition (wt%)
| C |
Cr |
Ni |
Si |
Mn |
S |
P |
| 0.35–0.45 |
23.0–27.0 |
18.0–22.0 |
≤2.0 |
≤2.0 |
≤0.05 |
≤0.05 |
Core Material Performance
- Continuous service temperature: 900–1100℃
- Stable austenitic microstructure at high temperature, effectively inhibit high-temperature creep deformation
- Excellent anti-oxidation performance, slow surface scaling under long-term waste incineration flue gas erosion
- Strong thermal shock resistance, no cracking under frequent furnace charging and cooling cycles
- Good corrosion resistance against sulfur, chlorine flue gas generated from waste combustion
Key Product Features
- High chromium-nickel HK40 alloy formula greatly restricts permanent creep deformation under long-term high-temperature bearing load, effectively avoid grate bar bending and jamming
- Optimized grate tooth and ventilation slot structure, improve combustion efficiency while reducing ash abrasion on the base body
- Complete homogenization heat treatment eliminates casting internal stress, prevent thermal fatigue crack failure during long-term incineration operation
- Strong resistance to chlorine and sulfur corrosive flue gas unique to waste incineration, outperforms ordinary low-alloy heat-resistant castings
- Customizable single-piece length, tooth spacing and support structure according to boiler incineration capacity and waste calorific value
Main Matching Incinerator Cast Parts
Mobile grate bars, stationary grate bars, side sealing grate blocks, connecting castings, ash baffle plates all made of HK40 alloy
FAQ
Q: Why select HK40 grate bars for waste incineration boilers?
A: Waste incineration brings sustained high temperature, sulfur/chlorine corrosive flue gas and frequent thermal cycles. HK40 has top-tier creep resistance to prevent bending deformation, and resists oxidation & flue gas corrosion, solving the frequent replacement problem of ordinary grate bars.
Q: Can you customize grate bar structure for different waste types?
A: Yes, we adjust ventilation gaps, tooth thickness and overall structural strength targeting domestic garbage, industrial hazardous waste and biomass waste.
Q: Can you provide professional high-temperature creep test reports?
A: Full inspection documents including creep performance, thermal shock, metallographic and NDT reports can be supplied for power plant project acceptance.
Our Strengths
- Dedicated HK40 high-nickel alloy smelting and homogenization heat treatment production line
- Rich manufacturing experience supporting waste incineration power plant boiler spare parts
- Strict raw material composition control to stabilize high-temperature creep resistance
- Stable mass supply for global solid waste incineration and thermal energy recovery projects
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