| ENGINE VALVE DIMENSION |

f-1.jpg (29091 bytes) W: One-piece JIS SUH3
B: Two-piece valve
21-4N&JIS SUH3 welded on stem)
X: One-piece 21-4N tip-welded
C: Hard-chromium plated
Tafftrided
High-frequency hardened
F: Stellite welded on valve face

| ENGINE VALVE DIMENSION |
f-2.jpg (56229 bytes)

  C Si Mn P S Ni Cr Mo Cu W Applied to
Martensitic Steel SUH 1 0.40-0.50 3.00-3.5 000.jpg (5160 bytes)0.60 000.jpg (5160 bytes)0.030 000.jpg (5160 bytes)0.030 000.jpg (5160 bytes)0.5 7.50-9.50 - - - in Valve
SUH 11 0.45-0.55 1.00-2.00 000.jpg (5160 bytes)0.60 000.jpg (5160 bytes)0.030 000.jpg (5160 bytes)0.030 - 7.50-9.50 - - - inValve
SUH 3 0.30-0.45 1.80-2.50 000.jpg (5160 bytes)0.60 000.jpg (5160 bytes)0.030 000.jpg (5160 bytes)0.030 000.jpg (5160 bytes)0.6 10.00-12.00 0.70-1.30 000.jpg (5160 bytes)0.30 - in Valve
Ex Valve
Seat Insert
SUH 4
(XB)		 0.75-0.85 1.75-2.25 0.20-0.60 000.jpg (5160 bytes)0.030 000.jpg (5160 bytes)0.030 1.15-1.65 19.00-20.50 - 000.jpg (5160 bytes)0.30 - Valve Seat
(Seat Insert)
SKD 11 1.40-1.60 000.jpg (5160 bytes)0.40 000.jpg (5160 bytes)0.60 000.jpg (5160 bytes)0.030 000.jpg (5160 bytes)0.030 000.jpg (5160 bytes)0.5 11.0-13.0 0.80-1.20 - - Valve Seat
(Seat Insert)
Austenitic Steel SUH 31 0.30-0.45 1.50-2.50 000.jpg (5160 bytes)0.60 000.jpg (5160 bytes)0.040 000.jpg (5160 bytes)0.030 13.00-15.00 14.00-16.00 - 000.jpg (5160 bytes)0.30 2.00-3.00 Valve Seat
(Seat Insert)
SUH 35 0.8-0.58 000.jpg (5160 bytes)0.35 8.00-10.00 000.jpg (5160 bytes)0.010 000.jpg (5160 bytes)0.030 3.25-4.50 20.00-22.00 - - - Ex Valve
SUH 36
(21-4N)		 0.475-0.575 000.jpg (5160 bytes)0.25 8.00-10.00 000.jpg (5160 bytes)0.030 0.040-0.090 3.25-4.50 20.00-22.00 - 000.jpg (5160 bytes)0.30 - Ex Valve
SUH 37
(21-12N)		 0.15-0.25 0.75-1.00 1.00-1.50 000.jpg (5160 bytes)0.025 000.jpg (5160 bytes)0.025 10.50-12.50 22.00-20.00 - 000.jpg (5160 bytes)0.30 - Ex Valve
SUH 38 0.25-0.35 000.jpg (5160 bytes)1.0 000.jpg (5160 bytes)1.2 0.18-0.25 000.jpg (5160 bytes)0.030 10.00-12.00 19.00-21.00 1.80-2.5 000.jpg (5160 bytes)0.30 - Ex Valve

 

  C Cr W Fe Co Hardness HRC
SRELLITE #1 2.5 30.0 12.0 3.0 Max. Bal. 54
SRELLITE   #6 1.0 28.0 4.0 3.0 Max. Bal. 44
SRELLITE #12 1.35 29.0 8.0 2.0 Bal. 47

JIS SUH3
Hardened special heat resistant alloy, magnetic and suitable for intake valve and lower heat  engines.

JIS SUH36(21-4N)
High-class heat resistant alloy, non-magnetic Austenitic steel offers the advantage of anti-wear and anti-corrosion at high temperature. Suitable for exhaust valves and heavy duty engines.

STELLITE
Cobalt/Chromium/Wolfram alloy steel welded on the seat face of valves(exhaust valve of heavy duty engines). Offers the advantage of heat resistant and anti-corrosion.