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YY/T 0641-2008 (YYT0641-2008)

YY/T 0641-2008_English: PDF (YYT 0641-2008, YYT0641-2008)
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YY/T 0641-2008English115 Add to Cart 0--9 seconds. Auto-delivery Standard Test Method for Transformation Temperature Of Nickel. Titanium Alloys by Thermal Analysis Valid YY/T 0641-2008

Standard ID YY/T 0641-2008 (YY/T0641-2008)
Description (Translated English) Standard Test Method for Transformation Temperature Of Nickel. Titanium Alloys by Thermal Analysis
Sector / Industry Medical Device & Pharmaceutical Industry Standard (Recommended)
Classification of Chinese Standard C35
Classification of International Standard 11.040.40
Word Count Estimation 6,684
Date of Issue 2008-04-25
Date of Implementation 2009-06-01
Quoted Standard ASTM E473; ASTM E967; ASTM E1140; ASTM F2005
Adopted Standard ASTM F2004-2000, IDT
Drafting Organization Grikin New Material Co., Ltd.
Administrative Organization National standardization technical committee of Surgical characters and orthopedic implant device
Regulation (derived from) SFDA [2008] No. 192
Proposing organization State Food and Drug Administration
Issuing agency(ies) China Food and Drug Administration
Summary This standard specifies the measurement of NiTi shape memory alloy phase transition temperature of the procedures. In SI units indicated values ??are considered standard. This standard does not show that deals with the use of standards related to safety. Before use to establish a dedicated, to ensure the safety and health of persons using the procedures and determine the applicability of the scope of management is the responsibility of the user of this standard.

Standards related to: YY/T 0641-2008

YY/T 0641-2008
ICS 11.040.40
C 35
Standard test method for transformation temperature
of nickel-Titanium alloys by thermal analysis
Issued by: China Food and Drug Administration
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative references ... 4 
3 Term ... 4 
4 Summary of test methods ... 5 
5 Meaning and use ... 5 
6 Interference ... 5 
7 Instrument ... 6 
8 Sample preparation ... 6 
9 Temperature calibration ... 6 
10 Test procedure ... 6 
11 Conversion of graphical data ... 7 
12 Report ... 8 
13 Accuracy and deviation ... 8 
14 Keywords ... 9 
Standard test method for transformation temperature
of nickel-Titanium alloys by thermal analysis
1 Scope
This standard specifies the procedure for measuring the transformation
temperature of NiTi shape memory alloys.
The value indicated in the SI unit is considered standard.
This standard does not indicate that it involves safety related to the use of the
standard. It is the responsibility of users of this standard to establish special
operating procedures to ensure the safety of use and personnel health before
use, and to determine the applicability of the management scope.
2 Normative references
The provisions in following documents become the provisions of this Standard
through reference in this Standard. For the dated references, the subsequent
amendments (excluding corrections) or revisions do not apply to this Standard;
however, parties who reach an agreement based on this Standard are
encouraged to study if the latest versions of these documents are applicable.
For undated references, the latest edition of the referenced document applies.
ASTM E 473 Standard terminology relating to thermal analysis
ASTM E 967 Standard test method for temperature calibration of differential
scanning calorimeters and differential thermal analyzers
ASTM E 1142 Standard terminology relating to thermophysical properties
ASTM F 2005 Standard terminology for nickel-titanium shape memory alloy
3 Term
For the technical terms used in this test method, see ASTM E 473, ASTM E
1142, ASTM F 2005.
7 Instrument
7.1 Use the difference display thermometer which has a heating and cooling
rate reaching 10 °C/min, which can automatically record the input energy
difference between the measured sample and the reference sample according
to the required sensitivity and accuracy.
7.2 Use a sample cuvette or pan made of aluminum or other inert materials with
high thermal conductivity.
7.3 Use clean nitrogen or helium.
7.4 Use an analytical balance with a sensitivity of 0.1 mg and a measuring range
of 100 mg.
8 Sample preparation
8.1 Use (20 ~ 50) mg of sample. Cut the sample, to get the largest surface in
contact with the DSC sample pan.
8.2 Place it in vacuum, or in air at 800 °C for 15 min which has sufficient
protection to prevent oxidation for annealing. Quickly cool the sample, to
prevent phase precipitation that can change the alloy transformation
8.3 Clean the sample to remove all foreign material contamination, such as
cutting fluid. If the sample is oxidized during heat treatment, grinding, polishing
or corrosion, the oxide layer shall be removed. Care shall be taken to avoid cold
working of the sample, because cold working will change the thermal effect
(characteristic curve) of the sample. Slight oxidation is allowed, but all thick
scale shall be removed.
9 Temperature calibration
In accordance with ASTM E 967, use the same heating rate, clean gas, and
flow rate to calibrate the temperature axis of the instrument as used in the actual
test sample.
10 Test procedure
10.1 Put the sample into the sample pan; place the sample pan on the test