Similar International Standards
EN 1652:2023CEN (European Committee for Standardization), Europe
HighCurrent
Copper and copper alloys - Plate, sheet, strip and circles for general purposes
Specifies composition, properties, and tolerances for rolled flat copper and copper alloy products, including brasses.
ASTM B36 / B36M - 19ASTM International, USA
HighCurrent
Standard Specification for Brass Plate, Sheet, Strip, And Rolled Bar
Covers requirements for rolled brass plate, sheet, strip, and bar for various UNS designated brass alloys.
JIS H 3100:2018JSA (Japanese Standards Association), Japan
HighCurrent
Copper and copper alloy sheets, plates and strips
Covers sheets, plates, and strips made of copper and copper alloys, including multiple brass compositions.
BS 2870:1981BSI (British Standards Institution), UK
MediumWithdrawn
Specification for rolled copper and copper alloys: sheet, strip and foil
Historical British standard covering similar rolled brass products, which formed a basis for the later European norms.
Key Differences
≠IS 4412 uses its own alloy designations (e.g., CuZn37), whereas international standards use different systems like UNS numbers in ASTM (e.g., C27200) or alphanumeric codes in EN (e.g., CW508L).
≠Temper designations vary. IS 4412 uses terms like 'O' (Annealed), 'H1', 'H2', 'H4' (Hard), while EN standards use R-numbers (e.g., R300) based on minimum tensile strength, and ASTM uses terms like 'Half Hard'.
≠Maximum allowable limits for impurities like Lead (Pb) and Iron (Fe) can be different for nominally similar alloys, affecting properties like machinability and corrosion resistance.
≠While IS 4412 provides standard dimensional tolerances, EN standards often offer a wider range of selectable tolerance classes (e.g., Class A, B for thickness), allowing for more precise specification.
Key Similarities
≈All standards cover the same fundamental wrought product forms: plates, sheets, and strips made from copper-zinc alloys (brasses).
≈The core technical requirements specified are consistent, including chemical composition, mechanical properties (tensile strength, elongation, hardness), and dimensional tolerances.
≈The concept of specifying material in different tempers or states of hardness, from soft (annealed) to various degrees of cold-worked (hard), is a fundamental and shared principle.
≈The primary basis for alloy classification in all standards is the nominal chemical composition, particularly the copper-to-zinc ratio which defines the brass type.