ASTM B989-19 pdf free

06-19 comment

ASTM B989-19 pdf free.High Fluidity (HF) Zinc-Aluminum Alloy in Ingot Form for Thin Wall Die Castings.
3. Terminology
3.1 Terms shall be defined in accordance with Terminology B899.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 die casting, n—a casting process in which molten metal is injected under high velocity and pressure into a metal die and solidified, also a product produced by such a process; alternately known as pressure die casting.
3.2.2 high fluidity alloy, n—a zinc alloy by nature of its composition is capable of producing die castings with thinner wall sections compared to typical die cast alloys; often less than 0.012 in. (0.30 mm) in thickncss.
3.2.3 thin wall die casting, n—a die casting with wall sections that can be less than 0.0 12 in. (0.30 mm) in thickness.
7. Methods for Chemical Analysis
7.1 The determination of chemical composition shall be made in accordance with Specification B949.
7.2 In case of dispute, the results secured by an approved method (or combination of approved methods), or by a method agreed upon by both parties, shall be the basis of acceptance.
7.2.1 Approved methods include: Test Methods E536, ISO 3815-1, or ISO 3815-2.
7.2.1.1 Test Methods E536 is generally applicable, but must be slightly modified to cover the higher Al range. ISO 3815- -1 and ISO 3815- -2 are generic methods applied to zinc and zinc alloys. Each of the methods may be modified and formatted for the alloy to be assayed. An experienced chemist, using suitable and/or traceable standards along with valid quality assurance techniques, will be able to perform and validate the methods and demonstrate acceptable precision and accuracy.
7.3 For purposes of determining compliance with specified composition limits as given in Table 1, an observed or calculated value shall be rounded to the nearest unit in the last right-hand place of figures shown in Table 1, in accordance with the rounding method of Practice E29.ASTM B989 pdf download.

Download It Now Download Here
ATTENTION: I REALLY NEED YOUR SUPPORT.THANKS A LOT.
AS 1301.402:2019 Methods of test for pulp and paper Method 402: Statistical monitoring of test systems for paper and paper board ASTM pdf free download

AS 1301.402:2019 Methods of test for pulp and paper Method 402: Statistical monitoring of test systems for paper and paper board

AS 1301.402:2019 pdf free.Methods of test for pulp and paper Method 402: Statistical monitoring of test systems for paper and paper board. 4 Principle For a particular test, a series of randomized samples of reference material is prepared such that measurements can be made at a minimum of two, but preferably three, levels over the working range of the test...
Download

BS EN 352-10:2020 pdf free

BS EN 352-10:2020 pdf free.Hearing protectors一Safety requirements Entertainment audio earplugs. BS EN 352-10 This document is applicable to entertainment audio earplugs. It specifies requirements on construction, design, performance, marking and user information relating to the inclusion of the entertainment audio facility.Entertainment audio earplugs use a wired or wireless system through which audio entertainment can be relayed. They may incorporate a...
Download

BS ISO 7902-1:2020 pdf free

BS ISO 7902-1:2020 pdf free.Hydrodynamic plain journal bearings under steady-state conditions一Circular cylindrical bearings Calculation procedure. BS ISO 7902-1 This document specifies a calculation procedure for oil-lubricated hydrodynamic plain bearings, with complete separation of the shaft and bearing sliding surfaces by a film of lubricant, used for designing plain bearings that are reliable in operation.It deals with circular cylindrical bearings having...
Download

LEAVE A REPLY

Anonymous netizen Fill in information