Different Types of Heat-Resistant Steel Trays
Heat-resistant steel trays are essential for high-temperature industrial processes like heat treatment, sintering, roasting, and drying. They’re engineered to withstand extreme temperatures, thermal cycling, and corrosive environments while supporting and transporting materials. Different types of these trays use specific alloy compositions to match various temperature ranges and industrial needs.
Understanding the core traits of each heat-resistant steel tray type helps you choose the best solution. This extends service life, cuts maintenance costs, and ensures stable operation in high-temperature workflows.
1. Chromium-Molybdenum (Cr-Mo) Heat-Resistant Steel Trays
Cr-Mo heat-resistant steel trays are widely used in medium-temperature industrial settings. Their key strengths are excellent thermal stability and creep resistance—resistance to deformation under long-term high-temperature stress.
-
Core Alloy Composition: Chromium (0.5%-9%), molybdenum (0.5%-1.5%), blended with carbon steel. Common grades: 15CrMo, 25CrMo, 30CrMo.
-
Key Features: Temperature resistance: 400℃-650℃; good thermal conductivity; tensile strength ≥500MPa; excellent thermal fatigue resistance (no cracking from repeated heating and cooling).
-
Performance Highlights: Maintains structural integrity during long-term medium-temperature use; low deformation rate (≤1% after 1000 hours at 550℃); works well in most neutral and weakly oxidizing environments.
-
Typical Applications: Heat treatment furnaces for automotive parts (gears, shafts) tempering; industrial drying ovens for plastics and rubber; low-temperature ceramic component sintering.
2. Austenitic Chromium-Nickel (Cr-Ni) Heat-Resistant Steel Trays
Austenitic Cr-Ni heat-resistant steel trays are premium choices for high-temperature and corrosive environments. They use the combined effect of chromium and nickel to boost heat and corrosion resistance.
-
Core Alloy Composition: Chromium (16%-25%), nickel (8%-20%), low carbon (≤0.08%). Common grades: 304, 316, 310S, 314.
-
Key Features: Temperature resistance: 600℃-1200℃ (310S grade up to 1200℃); excellent oxidation resistance (forms a dense Cr₂O₃ protective film); non-magnetic; good ductility and weldability.
-
Performance Highlights: Resists high-temperature corrosion from steam, sulfur dioxide, and weak acids; minimal thermal expansion and deformation; long service life in continuous high-temperature operations (≥5000 hours at 800℃).
-
Typical Applications: High-temperature sintering furnaces for electronic components; mineral processing roasting trays (copper, aluminum ore); stainless steel part heat treatment trays; glass and ceramic industrial kilns.
3. Ferritic Chromium Heat-Resistant Steel Trays
Ferritic chromium heat-resistant steel trays are cost-effective for medium-high temperature environments. They focus on oxidation resistance and thermal conductivity.
-
Core Alloy Composition: Chromium (11%-27%), low carbon (≤0.12%), little to no nickel. Common grades: 409, 430, 441.
-
Key Features: Temperature resistance: 550℃-850℃; excellent medium-temperature oxidation resistance; good thermal conductivity (higher than austenitic steel); lower cost than Cr-Ni austenitic steel.
-
Performance Highlights: Stable structure at high temperatures (no phase transformation); suitable for intermittent high-temperature operations; resistant to stress corrosion cracking in dry environments.
-
Typical Applications: Food processing industrial drying trays (dried fruits, grains); medium-temperature carbon steel part heat treatment trays; high-temperature equipment exhaust components; solar thermal power generation heat collection trays.
4. Nickel-Based Heat-Resistant Steel Trays (Super Heat-Resistant)
Nickel-based heat-resistant steel trays are ultra-high-temperature solutions for extreme industrial scenarios. They offer better heat and corrosion resistance than standard steel grades.
-
Core Alloy Composition: High nickel (30%-70%), plus chromium, molybdenum, tungsten, and cobalt. Common grades: Inconel 600, Incoloy 800H, Hastelloy X.
-
Key Features: Temperature resistance: 800℃-1400℃; exceptional creep resistance and thermal stability; excellent resistance to high-temperature corrosion (acids, alkalis, molten salts); high strength at extreme temperatures.
-
Performance Highlights: Maintains structural integrity during long-term ultra-high temperature use; minimal deformation even in harsh thermal cycling; suitable for the most demanding high-temperature processes.
-
Typical Applications: Aerospace component heat treatment trays; advanced ceramic ultra-high-temperature sintering; molten metal handling trays (aluminum, copper); petrochemical cracking furnace trays; nuclear power plant high-temperature components.
5. Key Selection Criteria for Heat-Resistant Steel Trays
To choose the right heat-resistant steel tray, match its features to your specific high-temperature conditions:
-
Operating Temperature: Medium (400℃-650℃) → Cr-Mo steel; Medium-high (550℃-850℃) → ferritic chromium steel; High (600℃-1200℃) → austenitic Cr-Ni steel; Ultra-high (≥800℃) → nickel-based steel.
-
Working Environment: Corrosive (acids, alkalis, steam) → austenitic Cr-Ni steel/nickel-based steel; Dry, neutral → ferritic chromium steel/Cr-Mo steel; Thermal cycling → austenitic Cr-Ni steel (good ductility).
-
Load Requirements: Heavy load at high temperature → nickel-based steel/austenitic Cr-Ni steel (high strength); Light-medium load → Cr-Mo steel/ferritic chromium steel.
-
Cost Budget: Cost-sensitive → ferritic chromium steel/Cr-Mo steel; High-performance needs → austenitic Cr-Ni steel; Extreme conditions → nickel-based steel.
6. Maintenance Tips to Extend Heat-Resistant Steel Tray Life
Proper maintenance greatly improves the performance and service life of heat-resistant steel trays in high-temperature operations. Follow these tips:
-
Gradual Heating/Cooling: Avoid rapid temperature changes to prevent thermal shock and cracking (especially for austenitic and nickel-based steel trays).
-
Regular Cleaning: Remove material residues, oxide scales, and corrosive substances after use. Use non-abrasive cleaners to avoid damaging the protective oxide film.
-
Wear Inspection: Check for deformation, cracking, and thickness reduction monthly. Replace trays when wear exceeds 20% of the original thickness or cracks are found.
-
Storage Protection: Store trays in dry, ventilated areas. Avoid stacking heavy objects to prevent permanent deformation; apply anti-rust oil for long-term storage (except austenitic stainless steel).
Why Tailored Heat-Resistant Steel Trays Matter for Your Operation
Mismatched heat-resistant steel trays cause frequent replacements, operational downtime, and higher costs. Tailored trays—designed for your specific temperature, environment, and load needs—ensure stable performance, extend service life, and maximize your high-temperature equipment investment return.
Need help selecting the right heat-resistant steel tray for your heat treatment furnace, sintering kiln, or other high-temperature application? Share your operating conditions and requirements for a free customized recommendation!
