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S690QL

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S690QL properties and heat treatment forged piece, Including S690QL application and specifications, We have all specifications,Including S690QL steel plate, S690QL sheet, S690QL square steel, S690QL flat bar,S690QL round bar,S690QL forgings, we can own production and sales.


Introduction to Our Products:

Specialized high quality steel

We have the advantages of equipment, technologies and price

forged/hot rolling/ extrusion of steel


We can produce the S690QL 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 S690QL and Standards

S690QL   ( 1.8928 )

 

Chemical composition % of the ladle analysis   of grade   S690QL (1.8928)
Nominal thickness =< 50(mm) CEV max = 0.65
Nominal thickness from 50 to 100 (mm) CEV max = 0.77
Depending on the thickness of the product and the manufacturing conditions, the manufacturer may add to the steel one or several alloying elements up to the maximum values given in order to obtain the specified properties
Nb, Ti, V, Zr: There shall be at least 0.015% of a grain-refining element present. AL is also one of these elements. The minimum content of 0.015% applies to soluble aluminium, this value is regarded as attained if the total aluminium content is at least 0.018%; in case of dispute the soluble aluminium content shall be determined
 

    Grade :     S690QL     Number:     1.8928     Standard: EN 10025 - 6 : 2004   Technical delivery conditions for flat products of high yield strength structural steels in the quenched and tempered condition     Classification:     High yield strength structural steels in the quenched and tempered condition

Mechanical properties of grade   S690QL (1.8928)
Temperature -40 -20 0
Notch impact test. Min. absorbed energy 30 40 50

Nominal thickness (mm) 3 - 50 50 - 100 100 - 150
ReH - Minimum yield strength (MPa) 690 650 630

Nominal thickness (mm) 3 - 50 50 - 100 100 - 150
Rm -Tensile strength (MPa) 770-940 760-930 710-900
Nominal thickness (mm) -
A - Minimum elongation Lo = 5,65 √ So (%) 14

C Si Mn Ni P S Cr Mo V N Nb Ti Cu Zr B CEV max   0.2 max   0.8 max   1.7 max   2 max   0.02 max   0.01 max   1.5 max   0.7 max   0.12 max   0.015 max   0.06 max   0.05 max   0.5 max   0.15 max   0.005 max   0.83



Equivalent grades of grade   S690QL (1.8928)

Germany
DIN,WNr
France
AFNOR
Sweden
SS
TStE690V
E690T
2625




Machining performance

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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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