Introduction to Standards

ASTM E45

A

Worst fields

Fields* with highest severity rating per inclusion type, based on largest total inclusion length per field and further categorization in thin and heavy based on inclusion width. True worst field identification.

For more information, see ASTM E45.

ASTM E45

D

Low inclusion content

For steels with low inclusion content. Number of fields per inclusion type and severity rating.

ASTM E45

E

SAM rating

Only larger inclusions type of B and D are considered. Number of fields per severity rating for B thin, B heavy, D heavy. Weighted result, SAM rating for type B and D.

ISO 4967

A

Worst fields

Fields with highest severity rating per inclusion type, based on largest total inclusion length per field and further categorization in fine and thick based on inclusion width. True worst field identification.

For more information, see ISO 4967.

ISO 4967

B

Field assessment

Comparable to ASTM E45, Method D. Total number of fields per inclusion type and severity rating.

JIS G 0555

A

Worst fields

Revision JIS G 0555:2020 is based on ISO 4967:1998 and revision JIS G 0555:2023 is based on ISO 4967:2013.

Worst fields: fields with highest severity rating per inclusion type, based on largest total inclusion length per field and further categorization in fine and thick based on inclusion width. True worst field identification.

For more information, see JIS G 0555.

JIS G 0555

B

Field assessment

Revision JIS G 0555:2020 is based on ISO 4967:1998 and revision JIS G 0555:2023 is based on ISO 4967:2013.

Total number of fields per inclusion type and severity rating.

GB/T 10561

A

Worst fields

Almost identical to ISO 4967:1998 with only small differences in size classification. Worst fields: fields with highest severity rating per inclusion type, based on largest total inclusion length per field and further categorization in fine and thick based on inclusion width. True worst field identification.

For more information, see GB/T 10561.

GB/T 10561

B

Field assessment

Almost identical to ISO 4967:1998 with only small differences in size classification. Total number of fields per inclusion type and severity rating.

(DIN) EN 10247

P

Largest inclusion

Largest inclusion: inclusions with largest length, diameter, and area per inclusion type. Standardized size values.

For more information, see DIN EN 10247.

(DIN) EN 10247

M

Largest field

Fields with the largest number, total length, diameter, and area per inclusion type. Standardized size values. For more information, see EN 10247, table 2. The largest field is based on the true worst field identification.

(DIN) EN 10247

K

Mean inclusion content

Mean inclusion content of the analyzed specimen area: inclusion content based on total number, length, diameter, and area per inclusion type. Standardized size values.

SEP 1571

M

Maximum inclusion value

Largest size class rating per inclusion type based on inclusion area. Single inclusion rating comparable to EN 10247, method P.

For more information, see SEP 1571.

SEP 1571

K

Mean inclusion value

Size weighted and normalized Oxide and Sulfide content of the analyzed specimen area. Number of inclusions per size class and inclusion type. Single inclusion rating based on inclusion area.

DIN 50602

M

Maximum inclusion value

Withdrawn standard but in practice still in use. Fields with the largest characteristic value per inclusion type.

For more information, see DIN 50602

DIN 50602

K

Mean inclusion value

Withdrawn standard but in practice still in use. Normalized inclusion content per inclusion type.