Performance Resistance to Stress Corrosion Cracking for UNS N08825 Alloy Used in Environments with High H2S and Elemental Sulfur

REN Yanhui; QIU Shufeng; TAO Keyu; TANG Li; JIANG Yuanxin; LI Ke; CUI Lei

doi:10.7643/ issn.1672-9242.2026.05.015

PDF(11122 KB)

Equipment Environmental Engineering ›› 2026, Vol. 23 ›› Issue (5) : 131-138. DOI: 10.7643/ issn.1672-9242.2026.05.015

Performance Resistance to Stress Corrosion Cracking for UNS N08825 Alloy Used in Environments with High H₂S and Elemental Sulfur

REN Yanhui¹, QIU Shufeng¹, TAO Keyu¹, TANG Li¹, JIANG Yuanxin¹, LI Ke², CUI Lei²

Author information +

History +

Abstract

The work aims to evaluate the suitability of UNS N08825 alloy in H₂S and elemental sulfur environments, ensuring safe material service. The axial constant-load tensile test method was adopted to simulate the actual service conditions of a highly corrosive gas field. A long-term study on the stress corrosion cracking resistance of UNS N08825 alloy was conducted under the combined conditions of high H₂S, high temperature, high chloride ion content and elemental sulfur. In addition, the changes in mechanical properties of the material before and after the test were compared and analyzed. The UNS N08825 alloy had good resistance to stress corrosion cracking (SCC) at both 132 ℃ and 90 ℃ under the environment containing high H₂S content and sulfur, but showed pitting corrosion risk. The corrosion product films mainly consisted of hydroxide and oxides of Cr and Ni, sulfides and oxides of Fe, and the combination of sulfur and chloride promoted the formation of pitting. The strength, toughness and stiffness of the UNS N08825 alloy decreased due to the effect of hydrogen permeation. As the temperature increased, the dropped value became greater. Therefore, when exposed to environments containing high H₂S, high chloride ions and elemental sulfur at a temperature of no less than 90 ℃, the UNS N08825 alloy is susceptible to pitting corrosion and should be used with caution.

Key words

constant-load / H₂S / high temperature / elemental sulfur / UNS N08825 / stress corrosion cracking / pitting corrosion

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

REN Yanhui, QIU Shufeng, TAO Keyu, TANG Li, JIANG Yuanxin, LI Ke, CUI Lei. Performance Resistance to Stress Corrosion Cracking for UNS N08825 Alloy Used in Environments with High H₂S and Elemental Sulfur[J]. Equipment Environmental Engineering. 2026, 23(5): 131-138 https://doi.org/10.7643/ issn.1672-9242.2026.05.015

References

[1] 钱进森, 陈长风, 李晟伊, 等. 元素S对镍基合金G3在高温高压H₂S/CO₂气氛中腐蚀行为的影响[J]. 中国有色金属学报, 2012, 22(8): 2214-2222.
QIAN J S, CHEN C F, LI S Y, et al.Effect of Elements on Corrosion Behavior of Nickel-Base Alloy G3 in High Temperature and High Pressure Environments Containing H₂S/CO₂[J]. The Chinese Journal of Nonferrous Metals, 2012, 22(8): 2214-2222.
[2] 邓洪达, 崔世华, 李春福, 等. 镍基合金G3在高含H₂S和CO₂环境中的腐蚀行为[J]. 腐蚀与防护, 2013, 34(4): 302-306.
DENG H D, CUI S H, LI C F, et al.Corrosion Behavior of Nickel Base Alloy G3 in High H₂S and CO₂ Containing Environment[J]. Corrosion & Protection, 2013, 34(4): 302-306.
[3] REBAK R B, DILLMAN J R, CROOK P, et al.Corrosion Behavior of Nickel Alloys in Wet Hydrofluoric Acid[J]. Materials and Corrosion, 2001, 52(4): 289-297.
[4] ZHAO X H, HAN Y, BAI Z Q, et al.The Experiment Research of Corrosion Behaviour about Ni-Based Alloys in Simulant Solution Containing H₂S/CO₂[J]. Electrochimica Acta, 2011, 56(22): 7725-7731.
[5] ABD EL AAL E E. Breakdown of Passive Film on Nickel in Borate Solutions Containing Halide Anions[J]. Corrosion Science, 2003, 45(4): 759-775.
[6] LI H N, ZHONG X K, LI J Y, et al.Elemental Sulfur Corrosion of Nickel-Based Alloy 825 in CO₂-H₂S- Containing Environment at High Temperature and High Pressure[J]. Journal of Materials Research and Technology, 2023, 25: 5260-5276.
[7] 陈长风, 姜瑞景, 张国安, 等. 镍基合金管材高温高压H₂S/CO₂环境中局部腐蚀研究[J]. 稀有金属材料与工程, 2010, 39(3): 427-432.
CHEN C F, JIANG R J, ZHANG G A, et al.Study on Local Corrosion of Nickel-Base Alloy Tube in the Environment of High Temperature and High Pressure H₂S/CO₂[J]. Rare Metal Materials and Engineering, 2010, 39(3): 427-432.
[8] MENG F J, HAN E H, WANG J Q, et al.Localized Corrosion Behavior of Scratches on Nickel-Base Alloy 690TT[J]. Electrochimica Acta, 2011, 56(4): 1781-1785.
[9] WIPF D O.Initiation and Study of Localized Corrosion by Scanning Electrochemical Microscopy[J]. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 1994, 93: 251-261.
[10] DAVOODI A, PAN J, LEYGRAF C, et al.Probing of Local Dissolution of Al-Alloys in Chloride Solutions by AFM and SECM[J]. Applied Surface Science, 2006, 252(15): 5499-5503.
[11] DAVYDOV A, CHUANG K T, SANGER A R.Mechanism of H₂S Oxidation by Ferric Oxide and Hydroxide Surfaces[J]. The Journal of Physical Chemistry B, 1998, 102(24): 4745-4752.
[12] LI Y X, WEN S M, ZENG D Z, et al.Corrosion Patterns and Optimal Materials of Tubings in Sulfur Purification Buried Wells in the Sichuan Basin[J]. Petroleum Research, 2025, 10(3): 592-601.
[13] RHODES P R.Environment-Assisted Cracking of Corrosion-Resistant Alloys in Oil and Gas Production Environments: A Review[J]. Corrosion, 2001, 57(11): 923-966.
[14] FANG H, YOUNG D, NEŠIĆ S. Corrosion of Mild Steel in the Presence of Elemental Sulfur[C]// Corrosion 2008. New Orleans: NACE International, 2008.
[15] SUN L, ZHAO T Y, QIU J, et al.Point Defect Model for Passivity Breakdown on Hyper-Duplex Stainless Steel 2707 in Solutions Containing Bromide at Different Temperatures[J]. Corrosion Science, 2022, 194: 109959.
[16] ALEXIADIS N, FUCHS A, TROßMANN T, et al. Modeling and Simulation of Passive Film Formation and Breakdown in Chloride Ion Containing Electrolytes—A Point Defect Model Extension[J]. Corrosion Science, 2025, 256: 113166.
[17] 李大朋, 李慧心, 胡丽华, 等. G3合金在高温高酸性环境中的钝化膜破钝机制[J]. 腐蚀与防护, 2024, 45(1): 1-6.
LI D P, LI H X, HU L H, et al.Passivity Breakdown of Passive Film for G3 Alloy in Severe Sour Environment at High Temperature[J]. Corrosion & Protection, 2024, 45(1): 1-6.
[18] PENG Y, LIN Y H, XIA R C, et al.Electrochemical Investigation of Chloride Ion-Induced Breakdown of Passive Film on P110 Casing Steel Surface in Simulated Pore Solution: Behavior and Critical Value Determination[J]. Metals, 2024, 14(1): 93.
[19] WANG J H, LI D G, SHAO T M.Diffusivity of Point Defects in the Passive Film on a Ni₁₆Cr¹³Co₄Mo Alloy in Molten NaCl-Na₂SO₄[J]. Corrosion Science, 2023, 223: 111456.
[20] FAN Z, WANG Z Y, LIU J Y.Influence of Elemental Sulfur on the Corrosion Behavior of Alloy G3 in H₂S+CO₂ Saturated Chloride Solution[J]. Rare Metal Materials and Engineering, 2019, 48(10): 3169-3174.
[21] 张金钟, 谢俊峰, 宋文文, 等. Cl-浓度对316L不锈钢点蚀行为的影响[J]. 天然气与石油, 2012, 30(1): 71-73.
ZHANG J Z, XIE J F, SONG W W, et al.Effect of Cl-Concentration on 316L Stainless Steel Pitting Corrosion Behavior[J]. Natural Gas and Oil, 2012, 30(1): 71-73.
[22] 余海燕, 胡丛庆, 陈雪杰, 等. 06Cr₁₉Ni10不锈钢无缝管腐蚀原因分析[J]. 物理测试, 2025, 43(4): 45-49.
YU H Y, HU C Q, CHEN X J, et al.Corrosion Cause Analysis of 06Cr₁₉Ni10 Stainless Steel Seamless Pipe[J]. Physics Examination and Testing, 2025, 43(4): 45-49.
[23] 张洪旭, 任凯, 刘金刚, 等. 316L不锈钢管道泄漏分析[J]. 全面腐蚀控制, 2025, 39(8): 183-187.
ZHANG H X, REN K, LIU J G, et al.Analysis of Leakage Failure of 316L Stainless Steel Pipeline[J]. Total Corrosion Control, 2025, 39(8): 183-187.
[24] 崔健. 乙二醇装置TEG塔塔釜泵入口不锈钢管道腐蚀原因分析[J]. 石油化工腐蚀与防护, 2025, 42(4): 39-44.
CUI J.Corrosion Cause Analysis of Stainless Steel Pipeline at the Inlet of TEG Tower Bottom Pump in Ethylene Glycol Unit[J]. Corrosion & Protection in Petrochemical Industry, 2025, 42(4): 39-44.