Corrodur 4034 Annealed Bar

Alternative and trade names
Corrodur 4034, X46Cr13, 1.4034, 420, 420C


1.4034 (X46Cr13) is characterised by its high hardenability in conjunction with good corrosion resistance in moderately corrosive environments. Due to its higher carbon content indicates very good hardenability. It is used in the quenched and tempered condition and due to its high hardness, is ideally suited for the production of cutting tools and the production of roller bearings.

Related Standards

Equivalent Materials



Density ρ

7.7 g/cm³ at 20 °C


Diameter d

160 mm



Charpy impact energy, V-notch aK,charpy,V-notch

12 J at 20 °C

Elastic modulus E

215 GPa at 20 °C

Show chart

Elongation A5 A5

10 % at 20 °C

Hardness, Brinell HB

245 [-] at 20 °C


Hardness, Rockwell C HRC

55 [-] at 20 °C

Tensile strength Rm

800 - 1000 MPa at 20 °C


Coefficient of thermal expansion α

1.05E-5 1/K at 100 °C

for 20°C to the mentioned temperature

Show chart

Specific heat capacity cp

460 J/(kg·K) at 20 °C

Thermal conductivity λ

30 W/(m·K) at 20 °C


Electrical resistivity ρel

5.5E-7 Ω·m at 20 °C

Chemical properties


Weight %






12.5 - 14 %


1 %


1 %


1 %


Technological properties

Application areas

Medical and Pharmaceutical industry, Roller Bearings, Mechanical Engineering, Cutlery, Blade and Tool Industry

Corrosion properties

Average - Good corrosion resistance in moderately corrosive environments that are free of chlorides, such as soaps, detergents and organic acids. Good resistance to water and steam. 1.4034 is not resistant to intergranular corrosion in the as-delivered or as-welded conditions. Due to the precipitation of chromium carbides and the formation of chromium depleted regions adjacent to these precipitates, 1.4034 should not be used in the soft annealed or over tempered conditions if corrosion resistance is an issue. Optimal corrosion resistance is thus achieved in the hardened condition with a polished surface finish. PRE = 12.5 – 14.5

General machinability

Poor - The machinability of this grade of stainless steel is directly related to its hardness. 1.4034 machines similar to carbon steels of the same hardness. Although it must be realised that the machining parameters will vary depending on the structure/hardness of the steel.

Heat Treatment

1.4034 can be soft annealed by holding at a temperature in the range 750 °C to 850 °C followed by slow cooling in an oven or in air. This steel may be hardened by heating to 1050 °C followed by rapid cooling in air or oil. After hardening and stress relieving at 200 °C.

Hot forming

It is formable at 800-1100°C

Processing history

Quenched and tempered QT 800


Poor - Although 1.4034 is generally not welded, it is soldered in some instances.

This material data has been provided by Deutsche Edelstahlwerke Specialty Steel (DEW).

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.