"抗蠕变强度" can be translated into English as "creep rupture strength" or "creep resistance strength".
"Creep rupture strength" specifically refers to the strength of a material under long-term static load at elevated temperatures, emphasizing its ability to resist creep failure (a type of slow, permanent deformation under constant stress).
"Creep resistance strength" is a broader term that also conveys the material's resistance to creep deformation over time.
In technical contexts, especially in materials science and engineering, "creep rupture strength" is often used to describe this property.