Published 02/25/2025 at 727 × 405 in Figure 4. Stress/strain relationship for WE54 vs. QH21 A and QE22A at 482°F (250°C). Figure 4. Stress/strain relationship for WE54 vs. QH21 A and QE22A at 482°F (250°C). Figure 4. Stress/strain relationship for WE54 vs. QH21 A and QE22A at 482°F (250°C).