What Is GX4CrNiMo16-5-1 / 1.4405 Stainless Steel?

GX4CrNiMo16-5-1 (EN 1.4405 stainless steel) is a good martensitic grade stainless steel, with sufficient corrosion resistance, good strength performance and high hardness, and the carbon content is reduced.

GX4CrNiMo16-5-1 martensitic chromium nickel molybdenum stainless steel (also called 1.4405 stainless steel) has very good strength and corrosion resistance welded joints, fatigue resistance, very good parameters, and corrosion resistance in a low temperature environment. For austenitic steel 18-8. In addition, it has good weldability.

Specification and application of GX4CrNiMo16-5-1 / 1.4405 stainless steel

GX4CrNiMo16-5-1 stainless steel should work at low concentrations at room temperature, usually in contact with acetic acid, citric acid, salt solution, pyrogallic acid, tannin, stearic acid, and some nitrates and sulfur compounds. This classification can be used.

GX4CrNiMo16-5-1 is mainly provided in the form of rods for the production of valves, turbine components, nuts and bolts, shafts, pins, pistons, main shafts, crankshafts, agitators, and is used in chemical, energy, marine, shipbuilding, aviation/ Low temperature industry.

standard

GX4CrNiMo16-5-1 steel grade

Chemical composition of GX4CrNiMo16-5-1 / 1.4405 stainless steel

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

Mechanical and physical properties of GX4CrNiMo16-5-1 / 1.4405 stainless steel

GX4CrNiMo16-5-1 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

GX4CrNiMo16-5-1 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

GX4CrNiMo16-5-1 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 GX4CrNiMo16-5-1 / 1.4405 stainless steel

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℃.