4Cr9Si2
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 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 | |||||||||||||||||||||||||||||||
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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 |
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.