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This is a Experimental Study study.

October 10, 2025

Superior Stress Relaxation Cracking Resistance of UNS S34752

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Authors

TOTakahiro OsukiNippon Steel (Japan)YSYuhei SuzukiNippon Steel (Japan)KYKenta YamadaNippon Steel (Japan)

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Implication

Research identifies superior stress relaxation cracking resistance of S34752 at 650°C, suggesting improved performance in high-temperature applications.

Key Points

S34752 shows higher stress relaxation cracking resistance than S31609 at 650°C, emphasizing its suitability for high-temperature operations.
Stress relaxation tests revealed that S34752 outperformed conventional heat-resistant austenitic stainless steels, including S34709.
Increased creep strength and unique alloy design give S34752 a significant advantage over its predecessors, enhancing durability.
Investigations into precipitation hardening mechanisms highlight the role of Cr depletion and M23C6 precipitation in SRC susceptibility.

Cite This Study

Osuki et al. (2025) studied this question.

synapsesocial.com/papers/68e8619c7ef2f04ca37e42b1 https://doi.org/10.1115/pvp2025-152621

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Implication

Research identifies superior stress relaxation cracking resistance of S34752 at 650°C, suggesting improved performance in high-temperature applications.

Superior Stress Relaxation Cracking Resistance of UNS S34752

Discussion

Member takes

Implication

Key Points

Cite This Study

Superior Stress Relaxation Cracking Resistance of UNS S34752

Discussion

Member takes

Implication

Key Points

Cite This Study

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