Duplex and super duplex stainless steels are ferrous alloys with up to 26% chromium, 8% nickel, 5% molybdenum and 0.3% nitrogen, which are largely used in applications in media containing ions ACI-ASTM CD4MCu (ASTM A890 Grade 1A, J93370) Cast May 30, 2020 · Alloy Composition Among cast stainless steels, the composition of ACI-ASTM CD4MCu steel is notable for containing a comparatively high amount of chromium (Cr) and including copper (Cu). Chromium is the defining alloying element of stainless steel. Higher chromium content imparts additional corrosion resistance.
Home » Alloy Grade / UNS:CD4MCuN, 1B. Overview. Excellent seawater corrosion resistance combined with nearly twice the strength of common stainless steels. Typical Uses. Centrifuge and dewatering equipment, couplings, heat exchangers, offshore piping systems, paper rolls, pulp digesters, pump and valve components, pressure vessels An Introduction to Super-Duplex Stainless Steelsalloy content. Today, modern Duplex stainless steel can be divided into four groups: Lean Duplex such as 2304, which contains no deliberate Mo addition; 2205, the work-horse grade accounting for more than 80% of duplex usage; 25 Cr duplex such as Alloy 255 and DP-3; Super-Duplex; with 25-26 Cr and increased Mo and N compared with 25 Cr grades, Cast Duplex Stainless Steels to ASTM A890 Magsen FoundryCast duplex stainless steels are also referred to as duplex stainless steel castings and duplex alloy steel castings. The duplex stainless steel alloys have a mixed microstructure of austenite and ferrite, the optimal ratio is 50/50, however in actual duplex stainless steel castings the ratio may be
A second example is CD4MCuN or UNS J93372, one of the earliest cast duplex stainless alloys, developed in the early 1960s. In addition to good corrosion resistance, it has exceptional strength. However, early castings of this alloy were inferior. They exhibited delayed brittle fractures, and were very difcult to produce with consistent Duplex 2205 & 2507 Stainless Steel - Alloy 2205 Duplex SS Our Duplex 2205 Stainless Steel is a nitrogen-enhanced duplex used in applications requiring high strength and excellent corrosion resistance.It is designed to combine improved resistance to stress corrosion cracking, pitting and crevice corrosion. Duplex 2205 provides nearly double the corrosion resistance typical in other austenitic stainless steels. Duplex Stainless ASTM A890 / ASTM A995 - Alloy CastingThe Duplex Stainless classification includes the following ASTM standards; ASTM A890 and ASTM A995. Stainless Austenitic Stainless Martensitic Stainless Nickel Base Steels Heat Resistant Stainless Precipitation Hardened Stainless Alloy Steels Carbon Steels. Certifications. ABS CD3MWCuN, UNS J93380 A890 1B, CD4MCuN, UNS J93372 A351 CF8M
Duplex stainless steel is a stainless steel in that it contains more than 10.5% Cr, and has a dual-phase ferritic and austenitic microstructure. The metallurgy of duplex steels is complex, and seeks to optimise competing properties of strength, toughness, corrosion resistance and manufacturability. Cast Designation. Nominal Composition. Global Pump CD4MCu StainlessCD4MCu Stainless Steel for Corrosive and Abrasive Applications. As an option, Global Pump provides it's full line of outstanding Trash and High Head pumps in CD4MCu, a high grade duplex stainless steel, for applications where corrosion and/or abrasion are a concern. CD4MCu is an Fe-Cr-Ni-Cu-Mo alloy with a duplex structure of ferrite and austenite. Grades - Stainless Steel - Duplex - ASTM A815 - S31803Duplex stainless steels are extremely corrosion resistant, work hardenable alloys. Their microstructures consist of a mixture of austenite and ferrite phases. As a result, duplex stainless steels display properties characteristic of both austenitic and ferritic stainless steels.
May 08, 2003 · The current metallurgical knowledge base shows addition of nitrogen to the alloy is very beneficial (CD4MCuN), and rapid cooling (water quenching) is essential to achieving the sought-after material properties. UNS32205 Duplex Stainless Steel - AZoMNov 23, 2009 · About 2205 Duplex Stainless Steel. 2205 is the most common duplex alloy which contains 22% chromium and 5% nickel. Please refer to the chemical composition and mechanic properties tables below. Chemical Composition of UNS32205 Duplex Stainless Steel. The chemical composition of UNS32205 Duplex Stainless Steel is provided in the table below. What is CD4MCuN? - Langley Alloy IncAs a duplex stainless steel, it combines the desirable aspect of properties of both austenitic and ferritic grades. The high chromium, molybdenum and nitrogen contents results in a Pitting Resistance Equivalent number (PREN) of 33-34, providing pitting and crevice corrosion resistance superior to Alloy 316L in almost all corrosive media.
physical properties of Durcomet 100 closely resemble other stainless steels. Table III lists the physical properties of this alloy. Table II Mechanical Properties Tensile Strength, ksi (MPa) 100 Yield Strength, ksi (MPa) 70 (485) Elongation, % in 2" 16 Typical Hardness, Brinell 224 Typical Impact Strength, Charpy v-notch ft-lbs (Joules) 40 (53)