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4Cr9Si2

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4Cr9Si2 properties and heat treatment forged piece, Including 4Cr9Si2 application and specifications, We have all specifications,Including 4Cr9Si2 steel plate, 4Cr9Si2 sheet, 4Cr9Si2 square steel, 4Cr9Si2 flat bar,4Cr9Si2 round bar,4Cr9Si2 forgings, we can own production and sales.


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We have the advantages of equipment, technologies and price

forged/hot rolling/ extrusion of steel


We can produce the 4Cr9Si2 has the following specifications:

Round bar steel: 1mm to 3000mm

Square-shape steel: 1mm to 2000mm

Plate steel:0.1mm to 2500mm

Width: 10mm to 2500mm

Lenth: We can supply any lenth based on the customer's requirement.

Forging: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes

Tubings: OD: φ6-219 mm, with wall thickness ranging from 1-35 mm.

Finished goods condition: hot forging/hot rolling + annealing/normalizing + tempering/quenching + tempering/any conditions based on the customer's requirement

Surface conditions: scaled (hot working finish)/ground/rough machining/fine machining/based on the customer's requirement

Furnaces for metallurgical processing: electrode arc + LF/VD/VOD/ESR/Vacuum consumable electrode.

Ultrasonic inspection: 100% ultrasonic inspection for any inperfections or based on the customer's requirementExcellent service for all kinds of industries,with advantages of technologies, equipment and price.

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Chemical composition % of the ladle analysis of grade 4Cr9Si2 and Standards

Characteristics for grade 40KH9S2 ( 40Х9С2 ).

    Grade :   40KH9S2   ( 40Х9С2 ) (   4Х9С2   )
      Classification :   High alloy high-temperature steel
      Equivalent steels:  

Chemical composition in % for grade   40KH9S2   ( 40Х9С2 ) GOST   5632 - 72
C Si Mn Ni S P Cr Ti Cu
0.35 - 0.45 2 - 3 max   0.8 max   0.6 max   0.025 max   0.03 8 - 10 max   0.2 max   0.3

Temperature of critical points for grade   40KH9S2   ( 40Х9С2 ).


Mechanical properties under Т=20oС for grade   40KH9S2   ( 40Х9С2 )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
      750 450 15 35   Annealing 850 - 870oC, air,

Physical properties for grade   40KH9S2   ( 40Х9С2 )
T E 10- 5 a 10 6 l r C R 10 9
Grade MPa 1/Grade Watt/(m·Grade) kg/m3 J/(kg·Grade) Ohm·m
20       7630    
100   11.1 17 7610    
200   12.7   7580    
300     20      
400   14.3   7510    
T E 10- 5 a 10 6 l r C R 10 9

Technological properties for grade   40KH9S2   ( 40Х9С2 )
Weldability: is not used.
 Flakes : not predisposed
Temper brittleness: predisposed

Equivalent steels for grade   40KH9S2   ( 40Х9С2 )
USA Germany Japan France England European Italy Spain China Bulgaria Hungary Poland Romania Czechia South Korea
- DIN,WNr JIS AFNOR BS EN UNI UNE GB BDS MSZ PN STAS CSN KS
HNV3
HW3
S65007
1.4718
1.4818
G-X45CrSi9-3
X45CrSi9-3
SUH1
SUH2
X45CrSi9-3
Z45CS9
401S45
X45CrSi9-3
X45CrSi8
X45CrSi9-3
X45CrSi8
F.3220
X45CrSi09-03
X45CrSi9-3
X4ScrSi09-03
4Cr9Si2
4Cr9Si8
ZG40Cr9Si2
4Ch9S2
4Ch9S3
X45CrSi9-3
SZ3
H9S2
45SiCr90
17115
STR1


Specification :
Mechanical properties :
sв - Tensile strength , [MPa]
sT - Yield stress, [MPa]
d5 - Specific elongation at fracture , [ % ]
y - Reduction of area , [ % ]
KCU - Impact strength , [ kJ / m2]
HB - Brinell hardness , [MPa]

Physical properties :
T - Test temperature , [Grade]
E - Young modulus , [MPa]
a - Coefficient of linear expansion (range 20o - T ) , [1/Grade]
l - Termal (heat) condition coefficient , [Watt/(m·Grade)]
r - Density , [kg/m3]
C - Specific heat ( range 20o - T ), [J/(kg·Grade)]
R - Electrical resistance , [Ohm·m]

Weldability :
without limitations - welding is done without heating and subsequent heat treeting
limited weldability - welding is possible under heating up to 100-120 grade and subsequent heat treeting
hard weldability - obtaining the quality welding needs the additional operations:heating up to 200-300 grade; the heat treeting ia annealing

Ac1 = 900 ,      Ac3(Acm) = 970 ,       Ar3(Arcm) = 970 ,       Ar1 = 810

 

 

 

 

 

 

 

 

 

 

 

 




Machining performance

Download 4Cr9Si2 the mechanical properties of the report, the report provides detailed performance analysis and application. Download >>


Principal Design Features

One of the most widely used precipitation hardening grades in the business. While soft and ductile in the solution annealed condition, it is capable of high properties with a single precipitation or aging treatment. Characterized by good corrosion resistance, high harness, toughness and strength.


Machinability

Long, gummy chips characterize this alloys machinability. It can be machined in the annealed condition, however condition H1150M will yield best results. Post machining solution treatment of parts will be required prior to final hardening if machining in this condition.


Heat Treatment

CONDITION A--Soak at 1900 F (1038 C) for 30 minutes and cool below 60 F (16 C) for complete martensite transformation. CONDITION H 950- Treat Condition A material at 900 F(482 C) for 1 hour, air cool.. CONDITION H925, H1025, H1075, H1100, H1150- Soak solution treated material for 4 hours at specified temperature, air cool, CONDITION H1150M- Soak solution treated material at 1400 F (760 C) for 2 hours, air cool, then re-heat to 1150 F (620 C) for 4 hours and air cool.


Welding

Successfully welded by common fusion and resistance methods, this alloy should not be joined by oxyacetylene welding. AWS E/ER630 filler metal is recommended if required.


Forging

Soak for 1 hour at 2150 F (1177 C) prior to forging. Do not work below 1850 F (1010 C). Post-work solution treatment is required prior to final hardening.





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