EN19 ROUND BAR
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EN19 Round Bar Specification
Grade |
en19 |
Specification |
BS 970 1955 EN |
Round bar size |
Diameter: 3-~800mm |
Hex Bar size |
2-100mm A/F |
Flat bar size |
Thickness: 2 -100mm |
Width: 10 to 500mm |
|
Square bar size |
4 to 100mm |
Angle bar size |
3mm*20mm*20mm~12mm*100mm*100mm |
Section |
3.0 to 12.0mm thickness |
Channel Bar |
80 x 40mm to 150 x 75mm section; 5.0 to 6.0mm thickness |
Hollow Bar |
32mm OD x 16mm ID to 250mm OD x 200mm ID) |
Billet Size |
1/2″ to 495mm Diameter |
Rectangles Size |
33 x 30mm to 295 x 1066mm |
Finish |
Cold (bright) drawn, centreless ground,smooth turned, peeled, slit rolled edge, hot rolled, hot rolled annealed, Rough Turned, Bright, Polish, Grinding, Centreless Ground & Black |
Tolerance |
H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements |
Surface |
Bright, Hot Rolled Pickled, Cold Drawn, Sand Blasting Finished, Polished, Hairline |
Condition |
Hardened & tempered, annealed |
Technique |
en19 Hot Rolled, Cold Drawn, Cold Rolled, Forged Round Bar, Rod |
Processing |
Bar cutting to 650mm |
Form |
en19 Welding Rod, Round, Rod, T-Bar, Channel Bar, Precision Ground Bar, Flat Bar, Square, Blocks, Round Rod, Rings, Hollow, Triangle, Rectangle, Hex (A/F), Threaded, Half Round Bar, Profiles, Billet, Ingot, I/H Bar, Forging etc. |
Our en19 round bar conforms to NACE MR0175/ISO 15156 |
EN19 Round Bar Chemical composition:
Element | C | Si | Mn | P | S | Cr | Mo | Fe |
Content (%) | 0.35-0.45 | 0.15-0.30 | 0.50 – 0.80 | 0.035 | 0.040 | 0.90-1.50 | 0.20-0.40 | 96.78-97.77 |
EN19 Round Bar Mechanical Properties:
Properties | Metric | Imperial |
Tensile strength | 655 MPa | 95000 psi |
Yield strength | 415 MPa | 60200 psi |
Bulk modulus (typical for steel) | 140 GPa | 20300 ksi |
Shear modulus (typical for steel) | 80 GPa | 11600 ksi |
Elastic modulus | 190-210 GPa | 27557-30458 ksi |
Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
Elongation at break (in 50 mm) | 25.70% | 25.70% |
Hardness, Brinell | 197 | 197 |
Hardness, Knoop (converted from Brinell hardness) | 219 | 219 |
Hardness, Rockwell B (converted from Brinell hardness) | 92 | 92 |
Hardness, Rockwell C (converted from Brinell hardness. Value below normal HRC range, for comparison purposes only) | 13 | 13 |
Hardness, Vickers (converted from Brinell hardness) | 207 | 207 |
Machinability (based on AISI 1212 as 100 machinability) | 65 | 65 |
EN19 Round Bar Equivalent Grades:
Internal Standard | BS | Din | IS | EN | Sae/Aisi |
EN19 | 709M40 | 42CrMo2 | 40Cr4Mo3 | En19 | 4140 |
EN19 Round Bar Types
EN-19 / 709M40 Polished Round Bar | EN-19 / 709M40 T-Bar | EN-19 / 709M40 Square Bar |
EN-19 / 709M40 Triangle Bar | EN-19 / 709M40 Flat Bar | EN-19 / 709M40 Hex Bar |
EN-19 / 709M40 Precision Ground Bar | EN-19 / 709M40 Hollow Bar | EN-19 / 709M40 Round Bar |
EN-19 / 709M40 Threaded Bar | EN-19 / 709M40 Rods | EN-19 / 709M40 Half Round Bar |
EN19 Round Bar Sizes Charts
En19 Rounds Hot Rolled | |||||||||||||
Size (mm) | 40 | 50 | 60 | 70 | 75 | 80 | 85 | 90 | 95 | 100 | 105 | 110 | |
115 | 120 | 125 | 130 | 140 | 150 | 160 | 170 | 180 | 190 | 200 | 220 | ||
240 | 260 | 280 | 300 | 320 | 350 | 400 | – | – | – | – | – |
EN19 Rounds Bright Drawn | ||||||||||||||
Size (inches) | 5/16 | 3/8 | 7/16 | 1/2 | 9/16 | 5/8 | 3/4 | 7/8 | 15/16 | 1 | 1 1/8 | 1 1/4 | 1 3/8 | 1 1/2 |
1 5/8 | 1 3/4 | 2 | 2 1/4 | 2 1/2 | 2 3/4 | 3 | 3 1/2 | 4 | – | – | – | – | – | |
Size (mm) | 10 | 12 | 15 | 16 | 18 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 60 | – |
EN19 Hexagons Bright Drawn | |||||||||||||
Size (ins A/F) | 0.500 | 0.600 | 0.625 | 0.750 | 0.937 | 1.010 | 1.125 | 1.300 | 1.500 | – | – | – | – |
Size (mm A/F) | 10 | 12 | 15 | 16 | 18 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 60 |
EN19 Round Bar Surface Finish
CD | Cold drawn | P | Polished |
BD | Bright drawn | SRE | Slit rolled edge |
CG | Centreless ground | HF | Hot finished |
CF | Cold finished | HRAP | Hot rolled annealed and pickled |
P&T | Peeled and turned | RT | Rough turned/peeled |
ST | Smooth turned | PR | Peeled and reeled |
EN19 Round Bar Physical Properties:
DENSITY (G/CM 3) | 8.08 |
DENSITY (LB/IN 3) | 0.292 |
MELTING POINT (°C) | 1425 |
MELTING POINT (°F) | 2600 |
EN19 Round Bar Thermal Properties:
Average Coefficient of Linear Thermal Expansion (μm/m.K) | ||||
Temp. Range °C | 20-100 | 20-200 | 20-400 | 20-600 |
Coefficient | 12.2 | 12.6 | 13.7 | 14.6 |
Electrical Resistivity ( μΩ.m) and Thermal Conductivity (W/m.K) | ||||
Temp. Range °C | 100 | 200 | 400 | 600 |
Electrical Resistivity | 0.263 | 0.326 | 0.4575 | 0.646 |
Thermal Conductivity | 42.6 | 42.2 | 37.7 | 33.0 |
EN19 Round Bar Condition
H&T | Hardened and tempered. |
ANN | Annealed |
PH | Precipitation hardened. |
EN19 Round Bar Hardness:
Properties | Metric | Imperial |
Hardness, Brinell | 197 | 197 |
EN19 Round Bar Sizes
Type | SIZES (mm) | SIZES (Inches) | ISO Tolerance |
Cold Drawn and Ground | 10.00 – 75.00 | 5/6″ – 2.50″ | h8-h9-h10-h11 |
Peeled and Polished | 40.00 – 150.00 | 1.50″ – 6.00″ | h11, h11-DIN 1013 |
Peeled and Ground | 20.00 – 50.00 | 3/4″ – 2.00″ | h9-h10-h11 |
Cold Drawn and Polish | 3.00 – 75.00 | 1/8″ – 3.00″ | h8-h9-h10-h11 |
EN19 Bars Standard lengths of 2000 mm up to 6000 mm. Cut to size on request (tolerance +2/-0 mm).
5.0 | 45.0 |
6.0 | 50.0 |
7.0 | 55.0 |
8.0 | 60.0 |
9.0 | 65.0 |
10.0 | 70.0 |
12.0 | 75.0 |
16.0 | 80.0 |
20.0 | 90.0 |
25.0 | 100.0 |
30.0 | 130.0 |
35.0 | 160.0 |
40.0 | 200.0 |
- SW 13 EN19 Round Bar
- SW 17 EN19 Round Bar
- SW 19 EN19 Round Bar
- SW 24 EN19 Round Bar
- SW 27 EN19 Round Bar
EN19 round bars Characteristics:
- When hardened and tempered, this material distorts when machining shafts or long spindles
- Work pieces should be rough machined to plus tolerance and left on the floor for 36 hours after which the material would have “aged” and relaxed, thereby minimising distortion in the finished product.
- Machinability is good, but surface defects should be removed by 6% on the outside diameter
- It is possible to weld this material, but welding should only be attempted with the appropriate methods and materials, according to welding expertise.
- Up to 100mm in diameter, ideal for 60 ton tensile applications
- Sizes above the limited ruling section will only be heat treated to hardness, with no guarantee of mechanical properties.
Forging Properties:
Forge within the temperature range of 125°C/90°C Celsius.
Stress Relieving:
Annealed: 600-650°c Heat is needed.
Hardened: 500-550°c Heat is needed.
Normalising:
Heat 870°C – 900°C and cool in still air.
Annealing:
Anneal at a temperature of 85°C Celsius and cool steadily.
Forming
The alloy steel EN19 has a high degree of flexibility. In the annealed state, it can be formed using conventional techniques. Since it is tougher than plain carbon steel, it requires more force to form.
Working in the heat,
816°C to 1038°C is the temperature at which En19 steel can be hot.
Tempering
Depending on the desired hardness level, En19 alloy steel can be tempered at 205 to 649°C. Lower tempering temperatures can increase the steel’s hardness. Tensile strength of 225 ksi can be achieved by tempering at 316°C (600°F), and 130 ksi can be achieved by tempering at 538°C (1000°F).
Density:
Density of EN19 Alloy steel material: 7.85kg/cm3
The hardening process:
A temperature of 85°C/88°C Celsius is required for oil quenching.
Machinability:
EN19 alloy steel has good machinability in the annealed condition.
Welding:
All conventional welding techniques can be used to weld EN19 steel. The mechanical properties of this steel will be affected if it is welded in heat treated condition, so post-weld heat treatment is recommended.
EN19 Round Bars Applications
- Pumps/Electric Motor Industry
- Automobile Industry
- Defence Sector
- Railways
- Health & Sports
- Agriculture
- Oil & Gas
- Textile Industry
- Food Processing Industry
- Houses & Fittings
- Mining
- Miscellaneous
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