GOST 25536-82
GOST 25536−82 (ST SEV 2838−81) Metals. The scales of the images on the pictures in metallographic research methods
GOST 25536−82
(ST CMEA 2838−81)
Group B09
STATE STANDARD OF THE USSR
METALS
The scales of the images on the photos when metallographic
research methods
Metals Scales of images on photographs
at metallographec examination
Valid from 01.01.84
to 01.01.89*
______________________________
* Expiration removed
Protocol N 7−95 Interstate Council
for standardization, Metrology and certification
(IUS N 11, 1995). — Note the CODE.
DEVELOPED by the Ministry of ferrous metallurgy of the USSR
PERFORMERS
B. A. Klypyn, D. V. Khromov
INTRODUCED by the Ministry of ferrous metallurgy of the USSR
Zam. Minister A. F. Borisov
APPROVED AND put INTO EFFECT by decision of the USSR State Committee on standards of 16 December 1982 No. 4782
1. This standard specifies the scale image images, manufactured with metallographic methods.
This standard does not apply to photographs of the structures obtained using electron microscopes and other methods of investigation of the fine structure.
The standard fully complies ST SEV 2838−81.
2. The image scale is the ratio of the linear dimensions of the depicted area is valid to indicate when reduction 1:at increase
:1
— the rate of increase or decrease.
3. The image scale image with a photographic film with a frame size 24x36 mm denoted by adding the letter «K». Example: К200:1
4. Allowed marking scale image with an «x». Example: X500 or 500x.
5. The magnitude image is shown in the table.
| Feature image | The scale of the image | |
| preferred |
permitted | |
| The actual size | 1:1 |
- |
| Reduction | 1:2 | - |
| 1:5 | ||
| 1:10 | ||
| 2:1 | 20:1 | |
| 5:1 | 80:1 | |
| Increase | 10:1 | 150:1 |
| 50:1 | 300:1 | |
| 75:1 | 400:1 | |
| 100:1 | 600:1 | |
| 200:1 | 630:1 | |
| 500:1 | 800:1 | |
| 1000:1 | 1500:1 2000:1 | |
6. During reproduction of the positives the zoom is not allowed.
7. Determination of the image scale calculation method for the values of the magnification of the objective lens and eyepiece are not allowed.
8. The image scale indicated in the lower right corner of the photograph.
9. The number of the negative is placed in the lower left corner of the photograph.
10. Designation joint size, method of etching, a description of the structure and other data placed in the caption below the photograph.
