EN 38 Round steel
EN 38 alloy
EN38 steel plate
EN 38 Steel rods
CHEMICAL COMPOSITION (mass weight - %)
Carbon, C (%): ≤ 0.16
Silicon, Si (%): ≤ 0.30
Mangaese, Mn (%): ≤ 0.60
Phosphorus, P (%)≤: 0.035
Sulfur, S (%)≤: 0.030
Chromium, Cr (%): ≤ 0.30
Nickel, Ni (%): 4.50 ~ 5.50
Molybdenum, Mo (%): ≤ 0.50
Vanadium, V (%): ≤ 0.25
Tungsten, W (%): ≤ 1.00
MECHANICAL PROPERTIES UNDER ROOM TEMP.
Condition: Heat treatment
Tensile strength, Rm ≥ MPa: 1220 ~ 1390
Yield strength, Rp0.2 ≥ MPa: 930
Elongation, A5 ≥ (%): 7.0
Impact strength, AKV ≥ J: -
Hardness HBS: 347 Min.
EN 38 round steel plate is a kind of high performance military special steel plate, with high strength, high toughness, fatigue resistance, impact resistance and other excellent characteristics, is widely used in armored vehicles, tanks, aviation equipment, light weapons, missiles and other military equipment manufacturing and parts manufacturing. The following is a detailed introduction to EN 38 round steel plates.
EN 38 round steel plates, after proper heat treatment, exhibit excellent mechanical properties:
EN 38 Rockwell hardness: HRC 40 ~ 42
EN 38 Tensile strength: There are two statements, one is 1280MPa, the other is 755 ~ 900MPa, the specific value may vary depending on the production batch and heat treatment process.
EN 38 Conditional yield strength: σ0.2(MPa) 590 ~ 785
Elongation: δ5(%) 12 ~ 14
Section shortening rate: ψ(%) 32 ~ 40
Impact toughness value: αku(J/cm²) 32 ~ 55
Hardness: HB 241 ~ 341
Heat treatment and metallographic structure
EN 38 Heat treatment specification: The heat treatment process of oil quenching at 840 ~ 860ºC + tempering at 520 ~ 590ºC is usually used to obtain the required structure and properties.
EN 38 Metallographic structure: martensite after quenching; Tempered sorbite after quenching and tempering at high temperature.
Characteristics: EN 38 steel plate has high hardenability, and can obtain uniform strength, high plasticity, toughness, fatigue strength, low cold brittleness transition temperature and notch sensitivity on a large cross-section after quenching and tempering. The machinability is medium, but the cold deformation plasticity and weldability are poor.
Usage: Due to its excellent performance, EN 38 steel plate is especially suitable for manufacturing parts with large sections, such as shaft parts, butt joints, gears, etc., and has a wide range of applications in the military field.
6. EN 38 production process
The production process of EN 38 steel plate usually includes initial refining, LF refining, VD treatment, continuous casting (die casting), cleaning, heating, rolling, surface inspection, batch, inspection, heat treatment, cutting sampling, performance inspection and storage steps. These steps ensure that the quality and performance of the steel plate meet the standard requirements.
PROFILE AND DIMENSIONS
Round bar / Wire rod (Diameter): 5.50mm to 800mm
Square bar / Flat bar: 10mm to 800mm
Length: Fixed length or random length or based on the customer's special requirement.
Heavy/middle plate via hot rolled: T60 ~ 400mm X W100 ~ 1000mm X L1000 ~ 5000mm
Sheet steel via cold rolled: T1.0 ~ 3mm X W100 ~ 1000mm X L1000 - 2000mm
Steel strip via cold rolled: T0.5 - 3mm X W5 - 200mm X L (or in coil form)
Forging piece: stepped shafts, other different shapes based on OEM.
TYPICAL APPLICATIONS
Alloy structural steels are widely used in the filed of ship, vehicle, airplane, guided missile, weapons, railway, bridges, pressure vessel, machine tools, mechanical components with a bigger sectional size and so on.
Power generation - turbine fasteners - boiler support rods
Process plant - fasteners, Mechanical gears, gear shaft, main axis, valve rod
Mechanical parts - connecting rod, bolt and nut, Multidiameter shaft.
Audited Supplier 
){kind=link}