Wrought Copper-Alloy Bearing and Expansion Plates and Sheets for Bridge and Other Structural Use

B100-13: Standard Specification for Wrought Copper-Alloy Bearing and Expansion Plates and Sheets for Bridge and Other Structural Use

Engineers and designers specifying materials for critical infrastructure projects, particularly bridges and other large-scale structures, understand the paramount importance of material reliability and performance. ASTM B100-13 provides an authoritative framework for selecting and procuring wrought copper-alloy bearing and expansion plates and sheets, ensuring these vital components meet stringent structural demands under challenging conditions. This essential standard is a cornerstone for professionals seeking proven material solutions for applications involving slow, intermittent movement and moderate pressure.

What is B100-13?

ASTM B100-13 is a comprehensive standard specification that defines the requirements for wrought copper-alloy plates and sheets specifically intended for use as bearing and expansion components in bridges and other structural applications. Originating from ASTM's commitment to developing industry-leading material standards, its primary purpose is to ensure the consistent quality, chemical composition, and mechanical properties of these specialized copper-alloy products, thereby guaranteeing their reliable performance in demanding structural environments.

Scope & Purpose

This standard governs the material properties, manufacturing processes, and acceptable tolerances for wrought copper-alloy plates and sheets designed for bearing and expansion applications. Its scope is specifically limited to materials used in bridges and other structures where slow and intermittent motion occurs under pressures not exceeding 3 ksi (20 MPa). While it details chemical composition, temper, and mechanical requirements, it does not extend to the design calculations for the structural elements themselves, nor does it cover application methods like welding, except where specifically noted for certain alloys.

Who Must Comply?

• • Primary audience: Materials Engineers, Structural Engineers, Mechanical Engineers, Design Engineers, Procurement Specialists, and Quality Inspectors involved in civil infrastructure and heavy manufacturing.
• • Industries affected: Civil Engineering, Structural Engineering, Bridge Construction, Transportation Infrastructure, Heavy Manufacturing, and Construction.
• • Compliance nature: Voluntary, but often mandated by project specifications, engineering codes, and procurement requirements.
• • Enforcement: Compliance is typically verified through material testing, supplier certifications, and project-specific quality assurance programs during material procurement and construction phases.

Key Requirements Overview

The standard requires that specified wrought copper-alloy plates and sheets conform to precise chemical composition limits for designated alloy types, ensuring predictable material behavior. Professionals must ensure that the material is manufactured through controlled hot and cold working and annealing processes to achieve a uniform wrought structure. Key provisions include adherence to specified temper conditions, which dictate the material's mechanical properties, and compliance with defined dimensional tolerances to ensure proper fit and function. Furthermore, the standard mandates that mechanical properties, such as tensile and compression strength, meet specified minimums when tested according to ASTM's established methods.

Related Standards & References

ASTM B100-13 is intrinsically linked with ASTM B248, which provides the general requirements for wrought copper and copper-alloy plate, sheet, strip, and rolled bar, forming a foundational set of provisions. ASTM B846 offers essential terminology for copper and copper alloys, ensuring clear communication and understanding of technical terms. Additionally, various ASTM test methods, such as E8 for tension testing and E9 for compression testing, are referenced for verifying the mechanical performance characteristics crucial for structural applications.