COMMON TRADE NAMES: SMC276®, INCONEL® Alloy C-276, Hastelloy® C-276
In addition to its exceptional corrosion resistance under the most severe conditions, higher strengths may be achieved with C276 than other nickel alloys. Therefore, the alloy is commonly used for downhole tubular components, packers, and other subsurface equipment under the most extreme environmental conditions found in high-pressure, high-temperature (HPHT) wells, Saltwater Injection wells, and Acid Gas Injection (AGI) wells. However, all environmental factors, including H2S, CO2 , temperature, pH, and chloride concentration, should be considered before final material selection.
The alloy is classified in MR0175/ISO15156 as a type 4e alloy, with no restrictions to a partial pressure of H2S below 400°F and resistant to 1000 psi H2S at 450°F.
C | Cr | Ni | Fe | Mn | Si | Mo | Co | P | S | V | W |
---|---|---|---|---|---|---|---|---|---|---|---|
≤ 0.02 | 14.5 - 16.5 | BAL | 4 - 7 | ≤ 1 | ≤ 0.08 | 15 - 17 | ≤ 2.5 | ≤ 0.03 | ≤ 0.03 | ≤ 0.35 | 3 - 4.5 |
PROCESS | DESCRIPTION |
---|---|
Steel Making | Made by electric furnace process or blast furnace followed by Vacuum Oxygen Decarburization (VOD) process or Argon Oxygen Decarburization (AOD) Process |
Pipe Making | Manufactured by traditional tube manufacturing processes, High strength tubulars should be furnished in cold worked condition |
Heat Treatment | Solution Annealing Process before final cold drawing |
API 5CRA / ISO 13680 Group 4 Category 15-60-16
Grade | Yield Strength ksi | Tensile Strength ksi | Elongation % | Hardness HRC | NACE MR0175/ISO 15156 H2S Sour Service Limits |
||
min | max | min | min | max | |||
110 | 110 | 140 | 125 | 11 | 35 | Table A.14 | No limit ≤ 400°F, Refer to table for temperatures up to 450°F |
125 | 125 | 150 | 130 | 10 | 37 | ||
140 | 140 | 160 | 145 | 9 | 38 | 140 Grade not recommended for sour service |
70°F | 200°F | 400°F | ||
---|---|---|---|---|
Density | lbs/in3 | 0.32 | ||
Thermal Expansion | X10-6/°F | 6 | 6.2 | 6.7 |
Elastic Modulus | psi x 106 | 29.8 | 29 | 28.3 |
Poisson Ratio | 0.3 | |||
Thermal Conductivity | Btu/ft h °F | 5.9 | 6.4 | 7.5 |
Specific Heat | Btu/lb °F | 0.1 | 0.1 | 0.1 |
MIN OD: 2-1/16″ (2.0625″)
MAX OD: 10-3/4″ (10.750”)
MAX WALL THICKNESS: 1.925”
LENGTHS: Up to 70′ (840”) – R1, R2, R3
END FINISH: Plain end, Premium threads, & API threads
Standard & Non-Standard Sizes Available.
Manufactured Material Available as Quickly as 1 Week.
Non-Standard Mill Quantities Accommodated
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