The Application of Silicolloy
Silicolloy A2 and Silicolloy XVI are precipitation hardened stainless steels with high silicon content,and its higher strength,hardness and wear resistance are superior to AISI17400.
Though its corrosion resistance is inferior to austenitic steels, it's superior tomartensitic and ferritic steels and totally greatly balanced steel.
Precipitaion hardened steels are hardened by age hardening after solution treatment, so rarely have problems both in processing and distortion after heat treatment like quenching mold.
Especially, Silicolloy XVI achieved the best hardness in the world concerning to the precipitation hardening.
- Higher Strength
- Heat Resistance
- Corrosion Resistance
- Wear Resistance
- Higher Hardness
- Seizure Resistance
1. Continuous casting rollerMaterial：Silicolloy A2
Continuous casting is a process to make half-finished goods of iron.
Iron which melted is poured into a model made with a roller continually.
Because the usage of the roller is severe, plural characteristics are necessary for the materials of the roller.
Conventional materials：
- JIS SUS321
- EN 1.4541
- UNS S32100
- AISI 321
- BS 321S31
- NF Z6CNT18-10
- DIN X6Cr NiTi18-10
- Heat resistance steel
- JIS SUH660
- EN 1.4980
- UNS S66286
- NF Z6NCTV25-20
- JIS SCM435
- EN 34Cr4
- AISI 4137
- BS 34CrMo4
- NF 34CrMo4
- DIN 34CrMo4
- JIS S45C
- EN C45E
- AISI 1045
- BS C45
- NF C45
- DIN C45
- Overlay welding material(13%Cr-4%Ni martensitic stainless steel)
Characteristics of Silicolloy Roller
Silicolloy is precipitation hardened stainless steel having composite property such as heat resistance,corrosion resistance, wear resistance
and high-temperature oxidation resistance.
Continuous Casting Roller made from Silicolloy can save cost for maintainance by reducing number of the times of replacements of rollers.
1. Heat resistance
- High-temperature oxidation resistance :
- Silicolloy A2 roller is comparatively strong against oxidation resistance in high temperature because of containing Si by around 3.5%.
- High temperature hardness・Wear resistance :
- Silicolloy A2 roller is superior in wear resistance because of relatively high hardness.
(ex. Hardness = normal temperature : HV320 / 600℃ : HV200) - Hot strength :
- Silicolloy A2 roller is hard to deform and bend because tensile strength is high compared to exsiting material.
(ex. Tensile strangth = normal temperature : 1100N/mm2 / 500℃ : 600N/mm2)
2. Corrosion resisitance
Silicolloy A2 roller is excellent in corrosion resistance against and strongly acidic powder.
3. Fracture toughness (heat check resistance)
Silicolloy A2 roller is superior in fatigue propagation resistance.
Thus, it is hard to occur crack even though high temperature heating rapidly cooling are repeated.
4. High-temperature corrosion resistance / High-temperature wear resistance
Silicolloy which has all-round stainless steel can realize longlife improvement of roller.
2. Bearing device for bridge / Roller＆Bearing plateMaterial：Silicolloy A2（C13B2）
Bearing device for bridge is a device to install between a superstructure and the infrastructure of the bridge.
The bridge lengthens and shrinks by thermal expansion.
Because a roller works horizontally, this device absorbs thermal expansion.
High strength, high hardness, corrosion resistance and tenacity are necessary for the materials of the roller and plate.
Rollers and a plates are made with Silicolloy and special heat-treatment.
As result, durability can be significantly improved.
Conventional materials：
- JIS SUS420J2
- EN 1.4028
- UNS S42000
- AISI 420
- BS 420S37
- NF Z33C13
- DIN X30Cr13
3. Shaft sleeve for pump / Pipe componentMaterial：Silicolloy A2＆Silicolloy XVI
In late years, for a sleeve for pumps and materials of the plumbing, a multiple characteristic is required.
There is much needs such as the corrosion resistance in the chemical plant and the wear resistance at the abrasion resistant high temperature, sliding characteristics with partner materials.
Silicolloy having a high function contributes to the extension of life of these parts.
Conventional materials：
- JIS SUS304
- EN 1.4301
- UNS S30400
- AISI 304
- BS 304S31
- NF Z7CN18-09
- DIN X5CrNi18-10
- JIS SUS630
- EN 1.4542
- UNS S17400
- AISI S17400
- NF Z6CNU17-04
- Overlay welding material(Stellite No6)
4. Precision plate/ Mold for medicine manufacture , Knife for food ＆ Plate for glass bottle manufactureMaterial：Silicolloy A2＆Silicolloy XVI
The precision plate of Silicolloy has many uses in special environment that correspondence has difficult in conventional materials
- The mold for medicine manufacture that hardness and corrosion resistance are required
- The industrial knife that hardness and corrosion resistance are required
- The plate for glass bottle manufacture that heat resistance and wear resistance are required
Conventional materials：
- JIS SUS304
- EN 1.4301
- UNS S30400
- AISI 304
- BS 304S31
- NF Z7CN18-09
- DIN X5CrNi18-10
- JIS SUS630
- EN 1.4542
- UNS S17400
- AISI S17400
- NF Z6CNU17-04
- Overlay welding material(Stellite No6)
5. Shaft for steam relief safty valve / Component parts hydroelectric power plant
Special technic：High hardness by induction heating partiallyMaterial：Silicolloy A2
Silicolloy is to use a special heat-treatment technology using high frequency heat-treatment and balances a contradicting characteristic of toughness and hardness.
- Shaft for steam relief safty valve of the elevated temperature and pressure use
- Part for hydraulic power generation plants that hardness and corrosion resistance are required
Conventional materials：
- JIS SUS630
- EN 1.4542
- UNS S17400
- AISI S17400
- NF Z6CNU17-04
- JIS SUS4440C
- EN 1.4125
- UNS S44004
- AISI 440C
- NF Z100CD17
- Overlay welding material(Stellite No6)
6. Nozzle for slit die coater / Precision metal mold
Key word：High mirror surfaceMaterial：Silicolloy XVI
Because Silicolloy XVI is manufactured from vacuum melting, it is a characteristic that there are few impurities.
That is why this new material increases the function of mirror surface characteristics, too.
- The mold for medicine manufacture that hardness and corrosion resistance are required
- The precision metal mold that hardness and corrosion resistance are required
- The nozzle for slit coater hardness and corrosion resistance are required
Conventional materials：
- JIS SUS630
- EN 1.4542
- UNS S17400
- AISI S17400
- NF Z6CNU17-04
- JIS SUS420J2
- EN 1.4028
- UNS S42000
- AISI 420
- BS 420S37
- NF Z33C13
- DIN X30Cr13
7. Silicolloy Metal Powder / Selective laser sinteringMaterial：Silicolloy A2＆Silicolloy XVI
Silicolloy is materials of precipitation hardening grades like AISI S17400 and Marageing steel.
Silicolloy has two kinds of types of Silicolloy A2 and Silicolloy XVI.
High-purity metal powders with low oxygen levels by using a combination of vacuum melting and inert gas atomization are produced.
The powder of Silicolloy is developing uses such as 3D printing , metal injection molding , thermal spraying.
In the case of hardness lack of AISI S17400, in the case of corrosion-resistant lack of Marageing steel, Silicolloy in particular is effective.
Conventional materials：
- JIS SUS630
- EN 1.4542
- UNS S17400
- AISI S17400
- NF Z6CNU17-04
- Marageing steel
