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Alleima® 3R12

Product catalog summary

Overview: Alleima® 3R12 is an austenitic chromium-nickel steel with low carbon content, suitable for various industrial applications including the production of flanges.

Standards: This material complies with several standards including ASTM 304L, 304, UNS S30403, S30400, EN Number 1.4306, 1.4301, and others. It is also suitable for production according to ASTM A-182.

Certificates: The material status is certified according to EN 10 204 3.1.

Chemical Composition: The nominal chemical composition includes ≤0.020% C, 0.4% Si, 1.3% Mn, ≤0.030% P, ≤0.015% S, 18.5% Cr, and 10.5% Ni.

Forms of Supply: The material is available in round-cornered square and round billets, with various sizes and tolerances. Surface conditions include unground, spot ground, fully ground, peel turned, or black condition.

Mechanical Properties: At 20°C, the material exhibits a proof strength of ≥205 MPa, tensile strength of 515-680 MPa, and elongation of ≥45%. The impact energy (Charpy V) is a minimum of 100 J.

High Temperature Performance: The material's mechanical properties vary with temperature, maintaining significant strength up to 1000°F.

Disclaimer: Recommendations are for guidance only. Suitability for specific applications should be confirmed based on actual service conditions. Technical data may change without notice.

Catalog excerpts

Alleima® 3R12 is an austenitic chromium-nickel steel with a low carbon content. Suitable for production of flanges etc. acc. to ASTM A-182 Certificates Status according to EN 10 204 3.1 Chemical composition (nominal) % C Si Mn P S Cr Ni Mo Others Forms of supplySizes and tolerances Round-cornered square, as well as round billets, are produced in a wide range of sizes according to the following tables. Larger sizes offered on request. Surface conditionsSquare billets Unground, spot ground or fully ground condition. Datasheet last updated 5/9/2025 6:38:03 AM (supersedes all previous editions)

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Peel turned or black condition. Square billets Size Tolerance Length Sizes and tolerances apply to the rolled/forged condition. Peel turned round billets Size Tolerance Length Unground round billets Size Tolerance Length For billets testing is performed on separately solution annealed and quenched test piece. The following figures apply on material in the solution annealed and quenched condition. Metric units Datasheet last updated 5/9/2025 6:38:03 AM (supersedes all previous editions)

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Proof strength Tensile strength Elong. Imperial units Tensile strength Elong. Contr. HB a) Rp0.2 and Rp1.0 corresponds to 0.2% offset and 1.0% offset yield strength, respectively. b) Based on L0 = 5.65/S0 , where L0 is the original gauge length and S0the original cross-section area. The impact energy (Charpy V) at 20°C (68°F) is min 100 J (74 ft-lb). Metric units Temperature Proof strength Proof strength Tensile strength Imperial units Temperature Proof strength Tensile strength Datasheet last updated 5/9/2025 6:38:03 AM (supersedes all previous editions)

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alleima.com/contact-us ALLEIMA.COM Datasheet last updated 5/9/2025 6:38:03 AM (supersedes all previous editions) Recommendations are for guidance only, and the suitability of a material for a speciﬁc application can be conﬁrmed only when we know the actual service conditions. Continuous development may necessitate changes in technical data without notice. This datasheet is only valid for Alleima materials

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