URAL STEEL | 003_PRODUCTS OF BY-PRODUCT-COKING PRODUCTION

METALLURGICAL COKE OUT OF EASTERN AREAS COALS

Steel grade
Class + 25 mm TU 1104–076100–00190437–159–96
Designation of value Rate for grades Test method
KD I DK II KD III KMF I
1.Ash value (Àd), % , no more than 11,5 12,5 13,6 13 GOST 11022
2. Total Sulfur portion by mass (Std),, %, no more than 0,5 0,6 0,8 0,6 GOST 8606 or
GOST 2059
3. Total moisture portion by mass (Wtr),, %, no more than          
for quenched coke of classes:         GOST 27588
40 mm and more 5 5 5 -  
25 ìì and more 6 6 6 6  
40–60 mm 6 6 6 6  
25–40 mm 14 14 14 -  
for dry-quenched coke not specified
4.Devolatilization (Vdaf), %, no more than          
for coke of classes:         GOST 6382
40 mm and more 1,2 1,2 1,2 1,2  
25 mm and more 1,2 1,2 1,2 1,2  
40–60 mm è 25–40 mm 1,5 1,5 1,5 1,5  
5.Coke hardness, %, for coke of clases:   GOST 5953
40 ìì and more:  
Ì10, no more than 10 11 10 -  
Ì40, no more than 60 55 58    
25 ìì and more:  
Ì10, no more than 11 11 11 11  
Ì25, no more than 82 82 82 82  
40–60 mm:  
Ì10, no more than 12 12 12 -  
Ì40, no more than 60 60 60 -  
6.Lump portion by mass with lump size less than 25 mm %, no more than:         GOST 5954.1
for coke of classes:  
40 mm and more è 40–60 mm 3 3 4 -  
25 mm and more 4 4 4,5 5  
25–40 mm 8 8 8 -  
7. Phosporus portion by mass, (Pd), %, no more than   0,018 GOST1932

Remarks
The rates to the coke quality values of 40 to 60 mm class are optional for 1 year since its production.
With the consent of the consumer the M40 hardness for coke with grain size 40 mm and more is allowed below the rate.
With the consent of the consumer the delivery of metallurgical coke with ash content above quota is allowed.