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Martensitic Grade    
 
JIS: SUH1
CM Brand: SIL 1
Chemical Composition (%)
C Si Mn Ni Cr Mo W N Others
0.40-0.50 3.00-3.50 0.60 MAX 0.60 MAX 7.50-9.50        

Heat Treatment and Related Mechanical Properties
Heat Treatment*
(°C)		 Mechanical Properties Material
Hardness (HRC)
(as delivered)
YS
(kgf/mm 2)		 TS
(kgf/mm 2)		 EI.
(%)		 RA
(%)		 Hardness
(HB)
980-1080 O.Q.
700-850 W.Q.		 70 MIN 95 MIN 15 MIN 35 MIN 269 MIN 38 MAX


JIS: SUH3
CM Brand:  
Chemical Composition (%)
C Si Mn Ni Cr Mo W N Others
0.35-0.45 1.80-2.50 0.60 MAX 0.60 MAX 10.00-12.00 0.07-1.30      

Heat Treatment and Related Mechanical Properties
Heat Treatment*
(°C)		 Mechanical Properties Material
Hardness (HRC)
(as delivered)
YS
(kgf/mm 2)		 TS
(kgf/mm 2)		 EI.
(%)		 RA
(%)		 Hardness
(HB)
980-1080 O.Q.
700-800 W.Q.		 70 MIN 95 MIN 15 MIN 35 MIN 269 MIN 34 MAX


JIS: SUH11
CM Brand:  
Chemical Composition (%)
C Si Mn Ni Cr Mo W N Others
0.45-0.55 1.80-2.50 0.60 MAX 0.60 MAX 7.50-9.50        

Heat Treatment and Related Mechanical Properties
Heat Treatment*
(°C)		 Mechanical Properties Material
Hardness (HRC)
(as delivered)
YS
(kgf/mm 2)		 TS
(kgf/mm 2)		 EI.
(%)		 RA
(%)		 Hardness
(HB)
1000-1050 O.Q.
650-750 W.Q.		 70 MIN 90 MIN 15 MIN 35 MIN 262 MIN 34 MAX


JIS: SUH600
CM Brand:  
Chemical Composition (%)
C Si Mn Ni Cr Mo W N Others
0.15-0.20 .050 MAX 0.50-1.00 0.60 MAX 10.00-13.00 0.30-0.90   0.05-0.10 V 0.10-0.40
Nb 0.20-0.60

Heat Treatment and Related Mechanical Properties
Heat Treatment*
(°C)		 Mechanical Properties Material
Hardness (HRC)
(as delivered)
YS
(kgf/mm 2)		 TS
(kgf/mm 2)		 EI.
(%)		 RA
(%)		 Hardness
(HB)
1100-1170 O.C.
600 MIN A.C.		 70 MIN 85 MIN 15 MIN 30 MIN 321 MAX 35 MAX


JIS: SUH616
CM Brand: 422
Chemical Composition (%)
C Si Mn Ni Cr Mo W N Others
0.20-0.25 .050 MAX 0.50-1.00 0.50-1.00 11.00-13.00 0.75-1.25 0.75-1.25   V 0.20-0.30

Heat Treatment and Related Mechanical Properties
Heat Treatment*
(°C)		 Mechanical Properties Material
Hardness (HRC)
(as delivered)
YS
(kgf/mm 2)		 TS
(kgf/mm 2)		 EI.
(%)		 RA
(%)		 Hardness
(HB)
1020-1070 O.C.
600 MIN A.C.		 75 MIN 90 MIN 10 MIN 25 MIN 341 MAX 35 MAX

O.Q. ... Oil Quenching
W.Q. ... Water Quenching
A.C. ... Air Cooling
O.C. ... Oil Cooling
W.C. ... Water Cooling

Note: Typical physical properties

Our products are available under the following conditions: (1) Natural, annealed or solution treated after hot rolling; (2) Smooth turned after hot rolling; (3) Centerless ground after hot rolling.

   
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