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DIN 1.4438

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DIN 1.4438 properties and heat treatment forged piece, Including DIN 1.4438 application and specifications, We have all specifications,Including DIN 1.4438 steel plate, DIN 1.4438 sheet, DIN 1.4438 square steel, DIN 1.4438 flat bar,DIN 1.4438 round bar,DIN 1.4438 forgings, we can own production and sales.


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We can produce the DIN 1.4438 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.

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Chemical composition % of the ladle analysis of grade DIN 1.4438 and Standards

Category  steel
Class  Stainless steel
Type  Austenitic standard
Common Names  Chromium-Nickel steel
Designations  France: AFNOR Z 2 CND 19.15
Germany: DIN 1.4438
Sweden: SS 2367
United Kingdom: B.S. 317 S 12
United States: ASME SA240 , ASTM A167 , ASTM A240 , SAE 30317L , UNS S31703

Composition
Element Weight %
C  0.03 
Mn  2.00 
Si  1.00 
Cr  18.0-20.0 
Ni  11.0-15.0 
P  0.045 
S  0.03 
Mo  3.0-4.0 

Mechanical Properties
Properties  Conditions 
T (°C) Treatment
Density (×1000 kg/m3) 8 25  
Poisson's Ratio 0.27-0.30 25  
Elastic Modulus (GPa) 200 25  
Tensile Strength (Mpa) 585  25  annealed (plate, sheet, strip) more
Yield Strength (Mpa) 240 
Elongation (%) 55 
Reduction in Area (%) 65 
Hardness (HRB) 85 (max)  25  annealed (plate, sheet, strip) more

Thermal Properties
Properties  Conditions 
T (°C) Treatment
Thermal Expansion (10-6/ºC) 16.5  0-100 more  
Thermal Conductivity (W/m-K) 14.4  100   
Specific Heat (J/kg-K) 500  0-100   

Electric Properties
Properties  Conditions 
T (°C) Treatment
Electric Resistivity (10-9W-m) 790  25   




Machining performance

Download DIN 1.4438 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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