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Alloy C276

The latest addition to our corrosion resistance range of metals

We have added to our corrosion resistant stock grades.  So now we stock standard and cold drawn stainless materials, nickel alloys like Alloy 718, Alloy 625, Alloy 825, our copper based alloys (CA104, C63000, C63200, NES833, etc.) and of course our super corrosion resistant MP35N.  To these we have added Alloy C276, a low carbon nickel-molybdenum-chromium superalloy, compliant with standards such as ASTM B574, UNS N10276, and Werkstoffe 2.4819.

Alloy C276 is resistant to pitting, stress corrosion cracking, and crevice corrosion in a wide range of chemical environments, particularly in chloride gas, hypochlorite and chlorine dioxide solutions.

The chromium content adds resistance to oxidizing media, such as ferric and cupric chlorides, while tungsten is present to provide additional general resistance in a wide range of severe environments.

Welding properties are good, with the low carbon content minimising carbide / grain boundary precipitation during welding to maintain corrosion resistance in the welded finished condition.

This material is used in the most severe environments such as chemical and petrochemical processing involving bleach, pollution control, pulp and paper production, industrial and municipal waste treatment, pharmaceutical and food processing equipment, and process plant involved in the recovery of sour natural gas.  It is ideal for use in evaporators, heat exchangers, sulphuric acid filters and reactors, and process plant handling acid catalysts.

Our stock range in round bar material goes from 10 mm dia to 250 mm dia.

Technical Data

Alloy C276 Condition:

Material is supplied in the annealed condition, and either centreless ground (up to 12.7 mm dia) or peeled.

Diameter tolerances are either h9 (up to 12.7 mm dia) or k12 above.

Alloy C276 nominal chemical composition (percent):

Ni Mo Cr Fe W Co C Si Mn V P S
Min 15.0 14.5 4.0 3.0
Max Bal 17.0 16.5 7.0 4.5 2.5 0.01 0.08 1.0 0.35 0.04 0.03

Alloy C276 bar mechanical properties at room temperature:

Tensile Strength

Minimum

Yield Srength

(0.2% offset) minimum

Elongation in 2″ or 4D minimum
Ksi MPa Ksi MPa %
100 690 41 283 40

Material is tested at room temperature in the longitudinal direction.  There is no reduction of area or hardness requirement in ASTM B574, although hardness is usually supplied to a maximum of 325 HBW (10/3000) / 35 HRC.  Similarly, ASTM B574 does not call for impact test results, but a minimum average of 96 Joules (67 Joules minimum single result) can be expected at room temperature.

Material is supplied with a homogeneous microstructure and free from inclusions, porosity & other defects.

We can carry out other tests to meet customer requirements.

Alloy C276 is just one of a range of corrosion resistant materials stocked by Broder Metals Group Ltd – please see our website for the full range: www.broder-metals-group.com/products

 

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