| Product Description | ||||
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SM125S is a low alloy High Strength Carbon steel OCTG material suitable for medium Sour Service severity applications. SM125S is a Sulfide Stress Cracking (SSC) resistant material.
SSC failure mechanism is a form of Hydrogen embrittlement in combined presence of H2S, water and tensile stresses. Using cutting edge R&D technology, SM125S was the first 125 ksi Sour Service material released in 2003. SM125S benefits from SMI's unrivaled know-how in manufacturing sour service materials since the 70's and best-in-class quality control. SM125S has no equivalent in API 5CT/ISO 11960 grades and in order to achieve its superior Sour Service properties SMI applies a very strict QA/QC throughout its manufacturing route from Steel Making to Heat Treatment processes. |
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| General | ||||
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Material Status
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Availability
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| Available Documents | |||
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Technical Datasheet (English)
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| Metals General |
Nominal Value
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Unit
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Forms Available
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Metal Type
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| Metals Physical |
Nominal Value
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Unit
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Density (77°F)
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lb/in³
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| Metals Mechanical |
Nominal Value
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Unit
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Tensile Strength (Ultimate)
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ksi
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Tensile Strength (Yield), 0.2%
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ksi
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Hardness (HRC-Scale)
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Poisson's Ratio (77°F)
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Tensile Modulus (77°F)
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ksi
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| Metals Thermal |
Nominal Value
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Unit
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Mean Specific Heat (77°F)
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Btu/lb/°F
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Mean CTE (77°F)
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in/in/°F
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Thermal Conductivity (77°F)
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Btu·in/hr/ft²/°F
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Thermal Diffusivity (77°F)
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in²/s
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| Notes |
| 1Typical properties: these are not to be construed as specifications. |
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