ASTM B103/B103M-23 PDF
Name in English:
St ASTM B103/B103M-23
Name in Russian:
Ст ASTM B103/B103M-23
Original standard ASTM B103/B103M-23 in PDF full version. Additional info + preview on request
Full title and description
ASTM B103/B103M-23 — Standard Specification for Phosphor Bronze Plate, Sheet, Strip, and Rolled Bar. This specification establishes requirements for phosphor bronze, leaded phosphor bronze, and certain bearing bronzes supplied as plate, sheet, strip, and rolled bar for general applications, including chemical composition, mechanical properties, and required tests.
Abstract
Specifies metallurgical and product requirements for wrought copper-tin alloys (phosphor bronzes), copper-tin-lead alloys (leaded phosphor bronze), and copper-tin-lead-zinc bearing bronzes in plate, sheet, strip, and rolled bar forms. Includes applicable UNS alloy designations, required chemical analysis, tensile and hardness tests, and notes on manufacturing and units (inch-pound and SI).
General information
- Status: Active / Current
- Publication date: October 1, 2023.
- Publisher: ASTM International
- ICS / categories: 77.150.30 - Copper products
- Edition / version: ASTM B103/B103M-23 (2023)
- Number of pages: 6.
Scope
Covers plate, sheet, strip, and rolled bar produced from phosphor-bronze and related copper alloys (specified by UNS numbers) for general-purpose uses. The specification defines acceptable alloy compositions, mechanical-property limits (tensile strength, elongation), Rockwell hardness testing, product forms and dimensions, manufacturing routes (hot/cold working and annealing), and the use of either inch–pound or SI units as separate, non-interchangeable systems.
Key topics and requirements
- Covered alloys and UNS designations (examples include C51000, C51100, C51180, C51900, C52100, C52180, C52400, C53400, C54400).
- Product forms: plate, sheet, strip, and rolled bar; manufacturing by hot or cold working and annealing.
- Chemical composition limits and mandatory chemical analysis for specified elements (Cu, Sn, P, Pb, Zn, Fe as applicable).
- Mechanical property requirements: tensile testing orientation (longitudinal/rolling direction), minimum tensile values, elongation, and Rockwell hardness tests.
- Units and tolerances: inch–pound and SI units are both provided but are to be treated independently.
- Notes on typical applications and selection guidance for phosphor vs. leaded phosphor vs. bearing bronzes (spring/connector uses, machinability, bearing applications).
Typical use and users
Used by materials engineers, metallurgists, manufacturers of electrical connectors, springs, bushings, bearings, and fabricators specifying phosphor bronze plate, sheet, strip, or rolled bar for components requiring a combination of strength, ductility, corrosion resistance, or bearing properties. Procurement teams and quality labs use the standard to verify chemical and mechanical compliance.
Related standards
Companion and related ASTM specifications and guides frequently cited with B103/B103M include general product requirements for wrought copper/alloys (ASTM B248/B248M), terminology and temper classification standards (ASTM B846, ASTM B601), and other product-specific standards such as ASTM B139/B139M for rods and bars and ASTM B888 for strip used in electrical connectors.
Keywords
phosphor bronze, phosphor-bronze plate, copper-tin alloy, leaded phosphor bronze, bearing bronze, UNS C51000, sheet, strip, rolled bar, tensile test, Rockwell hardness, ASTM B103/B103M-23, 2023
FAQ
Q: What is this standard?
A: ASTM B103/B103M-23 is the ASTM International specification that defines requirements for phosphor bronze and certain related copper alloys supplied as plate, sheet, strip, and rolled bar.
Q: What does it cover?
A: It covers alloy designations, chemical composition limits, mechanical-property requirements (tension and hardness), product forms, manufacturing notes, and unit usage (inch–pound and SI as separate systems).
Q: Who typically uses it?
A: Materials and design engineers, manufacturers of connectors, springs, bearings, procurement specialists, and testing laboratories use the standard when specifying or accepting phosphor bronze products.
Q: Is it current or superseded?
A: Current — B103/B103M-23 was published effective October 1, 2023, superseding the 2019 edition.
Q: Is it part of a series?
A: It is one of several ASTM wrought copper and copper-alloy product specifications; it is commonly used alongside general requirements standards (for example, ASTM B248/B248M) and other product-specific ASTM standards.
Q: What are the key keywords?
A: Phosphor bronze, copper-tin, UNS C51000, plate/sheet/strip/rolled bar, tensile, Rockwell hardness, ASTM B103/B103M-23.