OTAI SPECIAL STEEL is ASTM EN19 steel stockholders and suppliers from china. we have more 16 years experience in EN19 alloy steel supply.
EN19 Steel is a high quality Quenched and Tempered Alloy Structural steel, It belong to the high quality medium carbon, Oil Quenched & Tempered Hardenss is 28-34 HRC. EN 19 steel Annealing delivery hardenss less than 250HB.
Related Specifications ASTM A29/A29M DIN EN 10083/3 JIS G4053 GB GB/T 3077
1. Form of Supply
DIN EN19 Alloy structural steel, we can supply the EN19 steel round bar, steel flat bar, plate, hexagonal steel bar and steel square block. EN19 steel Round bar can be sawn to your required lengths as one offs or multiple cut pieces. EN 19 steel Rectangular pieces can be sawn from flat bar or plate to your specific sizes. Ground tool steel bar can be supplied, providing a quality precision finished bar to tight tolerances.
2. Chemical composition
| C(％) | 0.35～0.45 | Si(％) | 0.10～0.35 | Mn(％) | 0.50～0.80 | P(％) | ≤0.035 |
| S(％) | ≤0.050 | Cr(％) | 0.90～1.50 | Mo(％) | 0.20～0.40 |
3. AISI 4140 FORGE Steel Mechanical Properties and Physical properties
Density of EN19 Alloy steel material: 7.85kg/cm3
Engineering Alloy Steel material EN19 yield strength: 555-755 N/mm²
Tensile strength of EN19 Engineering steel: 775-1075 N/mm²
Engineering steel material EN19 hardness in HRC:
Flame or induction hardening can give a case hardness of 50 HRC or higher.
EN19 equivalent material with AISI 4140, DIN 42CrMo4 EN 1.7225, GB 42CrMo, JIS SCM440C alloy engineering steel
| Nominal diameter (mm): | to 16 | 16 – 40 | 40 – 100 | 100 – 160 | 160 – 250 | 250 – 330 | 330 – 660 |
| Rm – Tensile strength (MPa) (+QT) | 1100-1300 | 1000-1200 | 900-1100 | 800-950 | 750-900 | 700 | 600 |
| Nominal thickness (mm): | 0.3 – 3 |
| Rm – Tensile strength (MPa) (+A) | 620 |
| Rm – Tensile strength (MPa) (+AC) | 630 |
| Nominal thickness (mm): | to 8 | 8 – 20 | 20 – 50 | 50 – 80 |
| Rm – Tensile strength (MPa) (+QT) | 1100 | 1000 | 900 | 800 |
| Rm – Tensile strength (MPa) (+C) | 720 |
| Rm – Tensile strength (MPa) (+LC) | 670 |
| Nominal diameter(mm): or for flat products thickness: to 8; 8-20; 20-60; 60-100; 100-160; | to 16 | 16 – 40 | 40 – 100 | 100 – 160 | 160 – 330 | 330 – 660 |
| Re – Upper yield strength or Rp0.2 – 0.2% proof strength (MPa) (+QT) |
900 | 750 | 650 | 500-550 | 460-500 | 390 |
| Nominal thickness(mm): | 0.3 – 3 |
| Rp0.2 0.2% proof strength (MPa) (+A) | 480 |
| KV – Impact energy (J) longitud., (+QT) | +20° 30-35 |
| KV – Impact energy (J) transverse, (+QT) | +20° 22 |
| Nominal thickness (mm): | 0.3 – 3 |
| A – Min. elongation Lo = 80 mm (%) (+A) | 15 |
| A – Min. elongation at fracture (%) transverse, (+QT) | 10-14 |
| A – Min. elongation at fracture (%) (+C) | 4 |
| A – Min. elongation at fracture (%) (+LC) | 6 |
| Nominal thickness (mm): | to 16 | 16 – 40 | 40 – 100 | 100 – 160 | 160 – 250 |
| A – Min. elongation Lo = 5,65 √ So (%) (+QT), round products | 10 | 11 | 12 | 13 | 14 |
| Nominal diameter (mm): or for flat products thickness: to 8; 8-20; 20-60; 60-100; 100-160; | to 16 | 16 – 40 | 40 – 100 | 100 – 160 | 160 – 250 |
| Z – Reduction in cross section on fracture (%) (+QT) | 40 | 45 | 50 | 50 | 55 |
| Z – Reduction in cross section on fracture (%) (+AC) | 57 |
| Brinell hardness (HBW): (+S) | 255 |
| Brinell hardness (HBW): (+A) | 241 |
| Vickers hardness ( HV): (+A) | 195 |
| Vickers hardness ( HV): (+QT) | 340 – 490 |
4. EN19 alloy structure Steel heat treatment
A.Thermal processing temperature / ℃| Forging: 1050 ~ 850
B.The heat treatment temperature / ℃ | Annealing: 680 to 720
C.The heat treatment temperature / ℃ | normalizing: 840 to 880
D.The heat treatment temperature / ℃ | quenching: 820 ~ 850 830 ~ 860 oil water
E.The heat treatment temperature / ℃ | Tempering: 540 to 680
Hardness after annealing ≤HBS: 241
Steel Dimensions / mm: ≤16
After quenching and mechanical properties | σb≥ / MPa: 1100 ~ 1300
After quenching and mechanical properties | σs≥ / MPa: 900
Mechanical properties after quenching | δ5≥ / (%): 10
Mechanical properties after quenching | ψ≥ / (%): 40
After quenching and mechanical properties | AKV①≥ / J: 35
5. Applications
ASTM EN 19 steel is a alloy structural steel, EN 19 is used for engineering structural, use in Machine tool and automotive industries gear, gears, shafts, spindles, gears, bolts, studs and a wide variety of applications where a good quality high tensile steel grade is suited
6. Regular size and Tolerance
Round bar: Diameter Ø10-800mm
Plate: Thickness 5mm-800mm x width 2300mm max
Others EN 19 have not specified size, pls contact our experienced sales team.
7. EN19 Steel Processing
EN 19 tool steel round bar and flat sections can be cut to your required sizes. EN19 tool steel ground bar can also be supplied, providing a high quality tool steel precision ground tool steel bar to your required tolerances. EN 19 steel is also available as Ground Flat Stock / Gauge Plate, in standard and nonstandard sizes.
Contact our experienced sales team to help you with your EN 19 steel questionsadn enquiry by Email or Telphone. The questions will be reply in 24 hours.
OTAI SPECIAL STEEL CO., LTD
Email: jack@otaisteel.com TEL: 0086-769-23190193 FAX: 0086-769-88705839
