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1.8912

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1.8912 properties and heat treatment forged piece, Including 1.8912 application and specifications, We have all specifications,Including 1.8912 steel plate, 1.8912 sheet, 1.8912 square steel, 1.8912 flat bar,1.8912 round bar,1.8912 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 1.8912 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 1.8912 and Standards

S420NL   ( 1.8912 )
    Grade :     S420NL
    Number:     1.8912
    Standard: EN 10025 - 3 : 2004   Technical delivery conditions for normalized/normalized rolled weldable fine grain structural steels
    Classification:     Normalized rolled weldable fine grain structural steels

 

Chemical composition % of the ladle analysis   of grade   S420NL (1.8912)

Nominal thickness =< 63(mm) CEV max = 0.48
Nominal thickness from 63 to 100 (mm CEV max = 0.50
For long products the P and S content can be 0.005% higher
For railway application a maximum S content of 0.01% may be agreed at the time of enquiry and order
In sufficient other N-binding elements are present the minimum total Al content does not applay
Cu content above 0.4% may cause hot shortness during hot forming

C Si Mn Ni P S Cr Mo V N Nb Ti Al Cu CEV
max   0.2 max   0.6 1 - 1.7 max   0.8 max   0.025 max   0.02 max   0.3 max   0.1 max   0.2 max   0.025 max   0.05 max   0.05 max   0.02 max   0.55 max   0.52

 

echanical properties of grade   S420NL (1.8912)


Temperature -50 -40 -30 -20 -10 0 20
Notch impact test. Min. absorbed energy 27 31 40 47 51 55 63

Nominal thickness (mm) to 16 16 - 40 40 - 63 63 - 80 80 - 100 100 - 150 150 - 200 200 - 250
ReH - Minimum yield strength (MPa) 420 400 390 370 360 340 330 320

Nominal thickness (mm) to 100 100 - 200 200 - 250
Rm -Tensile strength (MPa) 520-680 500-650 500-650
.
Nominal thickness (mm) to 16 16 - 40 40 - 63 63 - 80 80 - 200 200 - 250
A - Minimum elongation Lo = 5,65 √ So (%) 19 19 19 18 18 18



Equivalent grades of grade   S420NL (1.8912)

Germany
DIN,WNr
France
AFNOR
China
GB
TStE420
E420FP
Q420E




Machining performance

Download 1.8912 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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