1020 / S20C Hydraulic Cylinder Tube , High Precision Skiving Pipe – Honed Steel Tubing
AISI 1010 / S10c Carbon Steel Tube – Mechanical Tubing – Seamless Steel Pipe
SAE 4137H Alloy Steel Bar
4145H Modified Alloy Steel Round Bar, Hot Rolled Steel Bar
27SiMn seamless cold drawn steel tube, with black annealed out surface
C276 (UNS N10276) is a cold hardened nickel-based alloy intended for the most extreme well conditions up to 450°F.
In addition to its exceptional corrosion resistance under the most severe conditions, higher strengths may be achieved with C276 than other nickel alloys. It is therefore 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.
Hastelloy C276 alloy (UNS N10276) was the first wrought, nickel-chromium- molybdenum material to alleviate concerns over welding (by virtue of extremely low carbon and silicon contents). As such, it was widely accepted in the chemical process and associated industries,
• INCONEL® Alloy C-276
• Hastelloy® C-276
• W.Nr. 2.4819
Typical chemical process industry (CPI) applications include reactors, heat exchangers, and columns, marine hardware, Chemical processing components Agrichemical and petrochemical production.
14.5 - 16.5
4 - 7
15 - 17
3 - 4.5
Made by electric furnace process or blast furnace followed by Vacuum Oxygen Decarburization (VOD) process or Argon Oxygen Decarburization (AOD) Process
Manufactured by traditional tube manufacturing processes, High strength tubulars should be furnished in cold worked condition
Solution Annealing Process before final cold drawing
NACE MR0175/ISO 15156
No limit ≤ 400°F,
140 Grade not recommended for sour service
*Non-standard mechanical properties and grades are made available upon agreement.
psi x 106
Btu/ft h °F
Plate sheet and Strip
B575 / B906
SB575 / SB906
Seamless, Pipe and Tubing
B622 / B829
SB622 / SB829
Welded Pipe and Tubing
B626 / B751 B619 / B775
SB626 / SB751 SB619 / SB775
Rod, Bar and Forgings
B462 / B564 / B574
SB564 / SB574
17752 / 17753 / 17754
Type of Test
Typical ASTM Grain Size
3.5 - 6
1 - 5
1 - 5
HASTELLOY C-276 alloy is very amenable to the Gas Metal Arc GMA/MIG), Gas Tungsten Arc (GTA/TIG), and Shielded Metal Arc (SMA/Stick) welding processes. Matching filler metals (i.e. solid wires and coated electrodes) are available for these processes, and welding guidelines are given in the “Welding and Fabrication” brochure.
HASTELLOY C-276 alloy can be hot forged, hot rolled, hot upset, hot extruded, and hot formed. However, it is more sensitive to strain and strain rates than the austenitic stainless steels, and the hot working temperature range is quite narrow. While cold work does not usually affect the resistance of HASTELLOY® C-276 alloy to general corrosion, and to chloride-induced pitting and crevice attack, it can affect resistance to stress corrosion cracking. For optimum corrosion performance, therefore, the re-annealing of cold worked parts (following an outer fiber elongation of 7% or more) is important.
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