EN19 steel Manufacturer and Exporter,supplied with round,square,flat,block,and shaft etc.
EN19/709M40,containing 1% Chromium-Molybdenum elements,is widely used as alloy engineering steel.It will get high tensile strength combined with good ductility,shock resistance and good wear resistance after heat treatment.EN19 steel is usually supplied with annealed condition(Max hardness below 248HB) after forged,and also suitable for quenched and tempered condition with tensile ranges of R(695-850Mpa),S(775-925Mpa),T(850-1000Mpa),U(925-1080Mpa),V(1000-1160Mpa),W(1080-1235Mpa),and Y(1235-1390Mpa).
1.Supply Form & Size & Tolerance
Hot Forged Round bar:Φ80-Φ1000mm
Hot Rolled Round bar:Φ16-Φ280mm
Hot Forged Square bar: Max Thickness:500mm
Flat bar/Blcoks:Thickness :120-800mm ,Width:120-1500mm
|Surface Finish||Black-Forged||Black-Rolled||Turned||Grinding||Polished||Peeled||Cold Drawn|
|Tolerance||(0，+5mm)||(0，+1mm)||(0，+3mm)||Best h9||Best h11||Best H11||Best H11|
EN19 Series For Speical Applications:EN19A,EN19B,EN19C.
3. Equivalent Grade
4. Mechanical Property
|Hardened & Tempered
|Ruling Section,inch||6||4||2 1/2||2 1/2||1 1/8||1 1/8||1|
|ISO V Impact,J,Min||54||54||54||48||48||41||14|
0.2% Proof Stress tests value with Quenched & Tempered condition
|Proof Stress(0.2%) Mpa,Min||495||555||635||710||775||850||990|
Recommended Forging temperature:850℃- 1150℃,and final forging temperature should not below 850℃.This material should be cooled as slowly as possible in still air or in sand after forged.
Normalizing is used to refine the structure of forgings that might have cooled non-uniformly after forged,and considered as a conditioning treatment before final heat treatment.Normalizing temperature for EN19 steel should be carried out between 870℃-900℃ with several steps,keep proper holding time depend on the steel size for the steel to be thoroughly heated to complete the ferrite to austenite transformation.Cool in still air.
Annealing is generally applied after forged and before machining to reduce surface harness,and get finer grain,get good machinability.
Soft Annealing:Heat the steel to the temperaure 680℃-700℃,Holding temperature for the steel heating, Cool slowly in the furnace.
Full Annealing:Heat the steel to the temperaure 850℃ with three steps ,Holding temperature for the steel heating,Cool in furnace.Surface hardness after annealing will be below 248HB.
Hardening temperature is carried out from an austenitizing temperature of 850-880ºC with several steps,keep suitable time for the steel to be thoroughly heated, oil quenching is recommended.
Tempering process should be followed after quenching immediately.Tempering at a suitable temperature ranges of 550-720ºC
With good performance,EN19 alloy engineering steel,is widely used in automotive ,oil & gas,and machine tool and motor industries and a wide variety of applications where a good quality high tensile steel grade is required.
- Automotive gears and parts
- Shatfs & axles
- Studs & Bolts
- Towing pins