What Is 1.4418 Stainless Steel? Introduction Of 1.4418 Composition Standard And Status

What is 1.4418 martensitic chromium nickel molybdenum stainless steel? RONSCO introduces you to the composition standard and heat treatment performance of 1.4418 stainless steel.

Specification and Application of 1.4418 Stainless Steel

1.4418 is a good martensitic grade stainless steel, with sufficient corrosion resistance, good strength performance and high hardness, and the carbon content is reduced.

1.4418 stainless steel has good strength and corrosion resistance of welded joints, fatigue resistance, very good parameters in low temperature environments, and corrosion resistance is equivalent to austenitic steel 18-8. In addition, it has good weldability.

1.4418 stainless steel can be used when working at low concentrations at room temperature, usually in contact with acetic acid, citric acid, salt solutions, pyrogallic acid, tannins, stearic acid and some nitrate and sulfur compounds.

1.4418 stainless steel mainly provided in the form of rods are used to produce valves, turbine components, nuts and bolts, shafts, pins, pistons, main shafts, crankshafts, agitators, and are used in chemical, energy, marine, shipbuilding, aviation/cryogenic industries.

chemical composition% of 1.4418

C:<0.6

Mn:<1.5

Si:<0.7

P:<0.04

S:<0.03

Cr: 15.0-17.0

Ni:4.0-6.0

Mo:0.8-1.5

N: >0.02

Production Shape of 1.4418 stainless steel:

stainless steel flat bar	stainless steel square bar
stainless steel angle steel	stainless steel I-beam

Hunan Allianz Metal Products Co., Ltd. can provide: 1.4418 stainless steel seamless pipes, welded pipes, round bars, wires, plates, forgings, pipe fittings and flanges, and special sizes can be customized. [Product Price Inquiry] or Visit [Ronsco Website] to learn more!

Mechanical and physical properties of 1.4418

1.4418 Annealing condition A

Size＞16mm

Tensile strength meter: <1100MPa

Hardness, HB: <320

Size＞16mm

Tensile strength meter: <1150MPa

Hardness, HB: <380

Bar heat treatment conditions QT760

1.4418 tensile strength: 760-960MPa

Yield strength: >550MPa

Elongation, A:>16%

Impact resistance of size KV 20℃＞70J

Bar heat treatment conditions QT900

Tensile strength: 900-1150MPa

Yield strength: >700MPa

Elongation, A:＞10%

Impact resistance of size KV 20℃>60J

1.4418 Bar heat treatment conditions QT840

Tensile strength: 840-1100MPa

Yield strength: >660MPa

Elongation, A:>14%

Impact resistance of size KV 20℃>55J

Other mechanical and physical properties

Elastic modulus E=200GPa

Heat capacity phosphorus=430J*kg-1*K-1

Thermal conductivity=15W*m-1*K-1

Specific resistance Ω: 0.8MKOHM*m

heat treatment of 1.4418

Delivery conditions A-600℃ to 650℃ temperature annealing, cooling in air or furnace.

Delivery conditions QT760-Quenching at 950 to 1050°C, cooling in oil or air, and tempering at 590°C to 620°C.

Delivery conditions QT900-Quenching at 950 to 1050°C, cooling in oil or air, and tempering at 550°C to 620°C.

Delivery conditions QT840-Quenching at 900～1000℃, cooling in oil or air, and tempering at 570～650℃.

1.4418 composition standard 1.4418 status QT760 QT900