ASTM B16/B16M-24 PDF
Name in English:
St ASTM B16/B16M-24
Name in Russian:
Ст ASTM B16/B16M-24
Original standard ASTM B16/B16M-24 in PDF full version. Additional info + preview on request
Full title and description
ASTM B16/B16M-24 — Standard Specification for Free‑Cutting Brass Rod, Bar and Shapes for Use in Screw Machines. This specification establishes chemical, mechanical, dimensional, temper, and hardness requirements for free‑cutting brass (primarily UNS C36000 and C36010) supplied as rod, bar, wire, and shapes intended for high‑speed screw machining and moderate thread rolling applications.
Abstract
ASTM B16/B16M-24 defines the material composition, permitted tempers, tensile and hardness requirements, and form/shape limits for free‑cutting brass products commonly used in screw‑machine manufacturing. The standard provides parallel provisions in both SI and inch‑pound units (each to be used independently) and includes requirements for identification, testing, and basic acceptance criteria to ensure suitability for high‑volume machining operations.
General information
- Status: Active / Current standard
- Publication date: 1 July 2024
- Publisher: ASTM International
- ICS / categories: 77.150.30 (Copper products)
- Edition / version: B16/B16M-24
- Number of pages: 5
Scope
This specification covers free‑cutting brass rod, bar, wire, and shapes of any specified cross section produced from Copper Alloy UNS Nos. C36000 or C36010 intended for high‑speed screw machining and moderate thread rolling. It specifies chemical composition limits, acceptable tempers, mechanical property requirements (tensile strength, elongation), Rockwell hardness limits, dimensional/shape requirements, and units conventions (SI and inch‑pound used independently). It does not attempt to address all safety concerns associated with use; users must determine applicable safety, health, and environmental practices.
Key topics and requirements
- Permitted alloys: primarily UNS C36000 (and C36010 where specified) for free‑cutting brass.
- Chemical composition limits and alloying element tolerances to ensure machinability and performance.
- Specified tempers and acceptable forming/finishing conditions for supplied product forms.
- Mechanical property requirements: minimum tensile strength, minimum elongation, and Rockwell hardness limits.
- Dimensional and shape descriptions for rod, bar, wire, and other cross‑section shapes used in screw machining.
- Dual‑unit presentation (SI and inch‑pound); each unit system is to be used independently for conformance.
- Identification, marking, and basic purchaser‑supplier responsibilities for acceptance and testing.
Typical use and users
ASTM B16/B16M-24 is used by material suppliers, metal service centers, screw‑machine shops, precision component manufacturers, design and procurement engineers, and quality/inspection personnel. Typical applications include mass‑turned fasteners, fittings, small machined components, electrical terminals, and other high‑volume parts where consistent machinability and predictable mechanical properties of free‑cutting brass are required.
Related standards
Standards commonly referenced alongside or used in the same supply chains include (but are not limited to): ASTM B21/B21M (naval brass), ASTM B36/B36M (various brass bars/rods), ASTM B124/B124M (naval brass forgings), ASTM B150/B150M (aluminum bronze rod/bar/shapes), and other ASTM nonferrous rod/bar specifications and applicable material‑testing methods. Procurement documents often reference applicable ASTM test methods and order‑specific requirements in addition to B16/B16M.
Keywords
free‑cutting brass, UNS C36000, UNS C36010, brass rod, brass bar, screw‑machine rod, machinability, Rockwell hardness, tensile strength, ASTM B16, B16M‑24, nonferrous products, copper alloys
FAQ
Q: What is this standard?
A: ASTM B16/B16M-24 is a material specification that sets requirements for free‑cutting brass rod, bar, wire, and shapes intended for screw‑machine applications.
Q: What does it cover?
A: It covers allowable alloys (primarily UNS C36000 and C36010), chemical composition, tempers, mechanical properties (tensile, elongation, Rockwell hardness), dimensional/shape requirements, and dual‑unit usage (SI and inch‑pound) for free‑cutting brass supplied for machining.
Q: Who typically uses it?
A: Material producers and distributors, screw‑machine and precision‑machining shops, design and procurement engineers, and quality/inspection staff use this standard to specify and verify free‑cutting brass for production parts.
Q: Is it current or superseded?
A: The B16/B16M-24 edition, published 1 July 2024, is the current active edition of the specification.
Q: Is it part of a series?
A: It is one of several ASTM nonferrous rod/bar specifications and is often grouped with other ASTM B‑series standards covering copper and copper‑alloy bars, rods, wire, forgings, and castings.
Q: What are the key keywords?
A: Free‑cutting brass, UNS C36000, machinability, screw‑machine rod, brass bar, tensile strength, Rockwell hardness, ASTM B16, B16M‑24.