83Cr20Si2Ni
2025-02-17 09:02:18 Origin： Remark：0 Click：
GB/T 12773-2008 Valve Steel and Superalloy bars for Internal Combustion Engines 83Cr20Si2Ni Round bar, Rod, Forgings 83Cr20Si2Ni Heat treatment
MATERIAL DESIGNATION - GB 83Cr20Si2Ni
MATERIAL SPECIFICATION - GB/T 12773 - 2008
Valve steel and superalloy bars for internal combustion engines
1S0 683-15:1992,Heat-treatable steels,alloy steels and free-cutting steels,
Part 15:Valve steels for internal combustion engines,MOD
Material Category: Martensitic type
Special Melting Practice - BEF + AOD / + ESR / EAF
HS Code - 72223000 / 72224000
PRODUCT DESCRIPTION
The alloy is usually produced by EAF / AOD / BEF followed by electroslag refining (ESR) / VAR if necessary for special purpose.
Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different levels according to the buyers' requirements.
Bars are usually supplied black in the annealed condition.
Final heat treatment - Quenched and tempered
PROFILE & DIMENSIONS & PROCESSING SERVICE
Rod / round bar (diameter): 5.0 ~ 80mm
Length: Fixed length or random length or based on the customer's special requirement.
Sheet steel via cold rolled: T0.5 - 6 X W60 ~ 1000 X Lmm
Steel strip via cold rolled: T0.5 - 3 X W5 - 300 X L (or in coil form)
Forging piece: stepped shafts, other different shapes based on OEM.
Carbon, C (％): 0.75 ~ 0.90
Silicon, Si (％): 1.75 ~ 2.60
Manganese, Mn (％): ≤ 0.80
Manganese, Mn (％): ≤ 0.80
Phosphorus, P (％) ≤: 0.030
Sulfur, S (％) ≤: 0.030
Nickel, Ni (％): 1.15 ~ 1.70
Sulfur, S (％) ≤: 0.030
Nickel, Ni (％): 1.15 ~ 1.70
Chromium, Cr (％): 19.00 ~ 20.50
Molybdenum, Mo (％): -
Molybdenum, Mo (％): -
Copper, Cu (%): ≤ 0.30
Nitrogen, N (%): -
Ferrum, Fe (%): remainder.
MECHANICAL PROPERTY AT ROOM TEMPERATURE
Forms: Round bar, rod
Heat treatment practice: annealing 1030 ~ 1080 ℃, oil cooling, tempered 700 ~ 800 ℃, air cooled.
Tensile strength, Rm ≥ MPa: 880
Yield strength, Rp0.2 ≥ MPa: 680
Yield strength, Rp0.2 ≥ MPa: 680
Elongation, A5 ≥ (％): 10.0
Reduction of area, Z ≥ (％): 15.0
Hardness via heat treatment / HBW.: 295 min.
Reduction of area, Z ≥ (％): 15.0
Hardness via heat treatment / HBW.: 295 min.
Hardness via annealing / HBW.: 321 Max.
TECHNICAL SALES ASSISTANCE & SERVICE
20+ years Focus On Special Steel Manufacturing and processing.
Stock over 60 grades with a competitive price, along with cutting service for specific requirement.
Customizing special material is welcome.
We closely cooperate with the professional inspection partners to strictly control the quality and improve the quality manage system, and guarantee the goods delivery each time. It is proved that we are worth of trusting and will be the strategic partner of the supplying chains in the special steels field.
Export packing / Export documents.
Transport by Track, Sea, Courier (FedEx, UPS, DHL) and Air Cargo.
Export packing / Export documents.
Transport by Track, Sea, Courier (FedEx, UPS, DHL) and Air Cargo.
CNC saw cutting.
Marking by stamping or printing.
Third party inspection service.
Marking by stamping or printing.
Third party inspection service.
If you are interested in our products or services, or would like to learn more about us, pleased to EMAIL (sales@ccsteels.com) our qualified production engineers or sales department.
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