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STC48

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STC48 properties and heat treatment forged piece, Including STC48 application and specifications, We have all specifications,Including STC48 steel plate, STC48 sheet, STC48 square steel, STC48 flat bar,STC48 round bar,STC48 forgings, we can own production and sales.


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We can produce the STC48 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 STC48 and Standards

Characteristics for grade 15KH5M ( 15Х5М ).

  Grade :   15KH5M   ( 15Х5М ) (   Х5М   )
      Classification :   Low alloy high-temperature steel
Chemical composition in % for grade   15KH5M   ( 15Х5М ) GOST   20072 - 74
C Si Mn Ni S P Cr Mo W V Ti Cu
max   0.15 max   0.5 max   0.5 max   0.6 max   0.025 max   0.03 4.5 - 6 0.45 - 0.6 max   0.3 max   0.05 max   0.03 max   0.2
Temperature of critical points for grade   15KH5M   ( 15Х5М ).
Ac1 = 815 ,      Ac3(Acm) = 848 ,       Ar3(Arcm) = 775 ,       Ar1 = 718

Mechanical properties under Т=20oС for grade   15KH5M   ( 15Х5М )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Bar Ø 90   390 215 22 50 1180 Annealing 840 - 860oC,Cooling oven,
Sheet trick, GOST 7350-77     470 235 18     Annealing 840 - 870oC,Cooling air,
Pipe hot strain, GOST 550-75     392 216 22 50 1180  

Brinell hardness for grade     15KH5M   ( 15Х5М )   (hot-rolled, annealing) ,       GOST 20072 HB 10 -1= 217   MPa
    Brinell hardness for grade     15KH5M   ( 15Х5М )   ,     Pipe GOST 550-75 HB 10 -1= 170   MPa

Physical properties for grade   15KH5M   ( 15Х5М )
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 2.11     7750   430
100   11.3 37 7730 483  
200   11.6 36 7700    
300   11.9 35 7670    
400 1.78 12.2 34 7640    
500 1.45 12.3 33 7610    
600 1.02 12.5   7580    
T E 10- 5 a 10 6 l r C R 10 9

Technological properties for grade   15KH5M   ( 15Х5М )
Weldability: hard weldability.
 Flakes : predisposed
Temper brittleness: not predisposed

Equivalent steels for grade   15KH5M   ( 15Х5М )
USA Germany Japan France European Italy China Hungary Poland Romania Czechia
- DIN,WNr JIS AFNOR EN UNI GB MSZ PN STAS CSN
501
502
K41545
S50100
S50200
T12005
T51605
1.7362
12CrMo19-5
T5
X12CrMo5
SFVAB5A
STBA25
STC48
STFA25
STPA25
710CD5-05
Z15CD5-05
Z20CD5
1.7362
5CrMo16
X12CrMo5
A16CrMo25-5KG
A16CrMo25-5KW
10MoCr50
12CrMo20-5
H5M
10MoCr50
17102

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 STC48 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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