Parameters

Temperature range

Temperature range

750˚C - 850˚C

900˚C - 1300˚C

$A_1\left(\text{MPa}\right)$

129.560

72.380

$B_1\left(\text{MPa}\right)$

2405.754

727.340

$B_2\left(\text{MPa}\right)$

−10655.418

−3106.840

$B_3\left(\text{MPa}\right)$

17197.498

4886.440

$B_4\left(\text{MPa}\right)$

−9523.019

−2698.313

${\lambda }_1$

41.700 × 10⁻⁴

42.300 × 10⁻⁴

${\lambda }_2$

−12.900 × 10⁻⁵

−33.100 × 10⁻⁵

$X_0$

−31.440 × 10⁻⁵

10.110 × 10⁻³

$X_1$

1.624

1.193

$X_2$

−8.623

−6.393

$X_3$

21.453

16.390

$X_4$

−25.275

−20.018

$X_5$

11.393

9.252