What makes a material thermally shock resistant?

High R = σf(1-ν)/(Eα): high fracture strength σf, high Poisson’s ratio (1-ν), low Young's modulus E (accommodates strain), low CTE α. Silicon carbide and fused silica have high R despite different origins; metals generally better than ceramics due to ductility.

How is thermal shock critical ΔT calculated?

ΔTc = σf(1-ν)/(Eα). For Al2O3: ΔTc ≈ 200°C. For ZrO2 (partially stabilised): ΔTc ≈ 400°C. For fused silica: ΔTc ≈ 1000°C (due to very low α = 0.55 × 10⁻⁶ K⁻¹). Rapid quenching from above ΔTc causes immediate cracking.

Thermal Shock Resistance Parameter Calculator

Calculate thermal shock resistance R = σf(1-ν)/(Eα) and R''' = λσf(1-ν)/(Eα) for ceramics and refractories. Rank materials for resistance to cracking under rapid temperature changes.

2D stress state at a point. All stresses in MPa.

σx — Normal Stress X (MPa)

σy — Normal Stress Y (MPa)

τxy — Shear Stress (MPa)

⚙ Mechanical Note: Results are based on standard textbook formulas and ISO/AASHTO references. Always verify critical designs with applicable codes (ISO 898, AASHTO 1993, AISC, Eurocode 3) and a qualified engineer.

How to Use

Enter the values for the scenario you are assessing. Calculate thermal shock resistance R = σf(1-ν)/(Eα) and R''' = λσf(1-ν)/(Eα) for ceramics and refractories. Rank materials for resistance to cracking under rapid temperature changes. Use the thermal shock r result to inform your calculation.

Thermal Shock Resistance Parameter Calculator

How to Use

Frequently Asked Questions

What makes a material thermally shock resistant?

How is thermal shock critical ΔT calculated?