Corrodur 4104 QT650 Bar

Alternative and trade names
Corrodur 4104
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Description

The machinability of 1.4104 (X14CrMoS17) is far superior to that of the ferritic 17% chromium steel, 1.4016 as a result of the controlled sulphur addition to this grade of steel. The addition of sulphur however reduces the resistance to corrosion, and as such 1.4016 is significantly more resistant to corrosion than 1.4104, despite their similar chromium contents. It should be noted that as a result of the sulphur addition, neither minimum impact properties, nor elevated temperature properties are specified.

Related Standards

Equivalent Materials

Properties

General

Density ρ

7.7 g/cm³ at 20 °C

Dimension

Diameter d

160 mm

max.

Mechanical

Elastic modulus E

215 GPa at 20 °C

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Elongation A5 A5

10 % at 20 °C

Tensile strength Rm

650 - 850 MPa at 20 °C

Yield strength Rp0.2 Rp0.2

500 MPa at 20 °C

Thermal

Coefficient of thermal expansion α

1E-5 1/K at 100 °C

for 20°C to the mentioned temperature

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Specific heat capacity cp

460 J/(kg·K) at 20 °C

Thermal conductivity λ

25 W/(m·K) at 20 °C

Electrical

Electrical resistivity ρel

7E-7 Ω·m at 20 °C

Chemical properties

Element

Weight %

Comment

Fe

-

Balance

Cr

15.5 - 17.5 %

Mn

1 %

Si

1 %

Mo

0.2 - 0.6 %

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Technological properties

Application areas

Automotive industry, Decorative applications, Kitchen utensils, Electronic equipment

Corrosion properties

Low - Although 1.4104, contains 17 % chromium, the corrosion resistance of this steel is severely compromised by the addition of sulphur. This is particularly true when exposed to environments that promote pitting and crevice corrosion. PRE = 16.16 – 19.48

General machinability

Very Good -The machinability of this grade of stainless steel is superior to other 12 and 17 % chromium steels as a result of the sulphur addition.

Heat Treatment

Soft annealing: 750-850°C (Cooling in furnace, air) - Hardening: 950-1050°C in polymer, oil, air - Tempering: 550-650°C air

Hot forming

It is formable at 800-1100°C

Processing history

Quenched and tempered QT 650

Welding

Poor - In general, 1.4104 is not welded, other than occasionally being friction or resistance welded.

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.