- About us
- Products
- Special cuts
- Laser cutting parts
-
Technical information
- Thickness tolerances and tensile strengths
- Frequently Asked Questions
- Hardness comparison table
-
Technical information sheets
- 1.0338 - DC04
- 1.1248 - C75S soft
- 1.1274 - C100S
- 1.2003 - 75Cr1
- 1.2379
- 1.3912 - Alloy I
- 1.3981 - Alloy K
- 1.4031Mo
- 1.4021 – 1.4034 – 1.4037
- 1.4301
- 1.4310
- 1.4404
- 1.4529
- 1.4767 - heat resistant
- 1.4828 - heat resistant
- 2.0070 - Copper
- 2.0321 - Brass
- 2.1020 - Bronze
- 2.4068 - Nickel
- 2.4545 - Alloy Mu
- 2.4668 - Alloy 718
- 3.0205 - Alu
- Material information
- Downloads
- News
Unalloyed steel DC04 W.-Nr. 1.0338
1. Application examples
Unalloyed steels are very inexpensive materials for simple parts with no demands on
corrosion resistance and mechanical loads. Depending on the area of application, the
unalloyed steels DC01 to DC 05 are available in different tensile strength ranges from
annealed to hard-rolled versions.
With a tensile strength of at least 490 N/mm² (+C490), the quality in stock at h+s can be
stamped well, but can only be formed or deep-drawn to a limited extent. Formed parts
should therefore be made from softer version such as +LC with tensile strengths of 270 -
350 N/mm². The grades DC06 or DC07 should be used for demanding deep-drawn parts
such as spare wheel wells.
Further application examples:
Body panels, furniture fittings, painted sheet metal panels
Unalloyed steels are not permitted as spring materials. Hardened carbon steels such as C75S (1.1248) or C100S (1.1274) should be used for springs.
2. Material codes
German Norm: 1.0338 DC04 (former St2 K50)
ASTM: A 620 (1008)
English Norm: BS 1449 1 CR
AFNOR: ES
Japanese Norm: SPCE, HR4
3. Alloy Composition *
C: max. 0,08 %
Mn: max. 0,40 %
P: max. 0,03 %
S: max. 0,03 %
The composition is specified in the norm EN 10130.
* the exact composition of each batch can be documented by a material certificate 2.2 or
3.1 according to DIN EN 10 204.
4. Delivery condition
Condition: cold rolled, not hardenable
Surface: MA (metallic bright)
Tensile strength: Ultimate tensile strength: >590 N/mm² (at some thicknesses currently >490 N/mm²)
Further mechanical data: see chapter 7 and 8.
5. Sizes
thicknesses: 0,025 bis 1,00 mm
raw material width: 305mm
standard widths: 150 und 305mm
edges: cut
lengths: individual lengths from 5 to 10 000mm or as coil
The following sizes are available from stock (without obligation):
| thickness | maximum width
in mm | Ultimate tensile strength |
| 0,025 mm 0,05 mm 0,075 mm 0,10 mm 0,15 mm 0,20 mm 0,25 mm 0,30 mm 0,40 mm 0,50 mm 0,80 mm 1,00 mm | 150 mm 150 mm 150 mm 150 + 305 mm 150 + 305 mm 150 + 305 mm 150 + 305 mm 150 + 305 mm 150 + 305 mm 150 + 305 mm 150 + 305 mm 150 + 305 mm | currently only available in the tensile range +C490 |
6. Tolerances
thickness tolerace: DIN EN 10140
width tolerance: DIN EN 10140
straightness: normal
flatness: wave height max. 1,0 mm
The tolerances are specified in the norms EN 10130 and 10140.
7. Further mechanical data
Yield strength Rp0,2: depending of the ultimate tensile strength
Elongation A80: depending of the ultimate tensile strength
No information on the fatigue strength available. The non-alloyed steels like 1.0338 should not be used for mechanically stressed parts.
The highest application temperature is around 200° Celsius, depending on the load. Please note that Young's modulus values drop as temperature increases.
For higher operation temperatures we suggest the stainless heat resistant steels 1.4767 and 1.4828.
8. Physical properties
Density: 7,86 g/cm³
Thermal conductivity: 45-55W/(m °C) depending on the temperature
Heat capacity: 460 J/(kg °C) mean value at 50 – 100 °C
Thermal expansion: 12 x 10 -6 (between 30 - 100 °C)
Electric resistance: 0,13 Ohm x mm²/m
Modus of elasticity: 210 000 MPa bei 20 °C
Relative permeability μr: ca. 2000 (further information see chapter 13)
9. Blanking
We recommend a punch-to-die clearance of 4-10 % of the strip thickness.
The corner radius should be at least 0.25 mm and the punching die should be at least
twice the strip thickness.
The pieces should then be tumbled to receive a good edge roundness.
10. Laser cutting
This alloy can be laser cut without problems.
11. Photo etching
This alloy is very easy to etch.
12. Bending
As this material is supplied in the temper rolled condition, the rolling direction is important
regarding the bending. The suggested minimum bending radius depends on the tensile
strength of the material.
Bending at right angle (90°) to the rolling direction:
minimum 2 times of the strip thickness.
Bending parallel to the rolling direction:
minimum 6 times of the strip thickness.
We suggest the tensile range +LC (annealed, slightly rerolled) for bent parts or the alloys
DC06 or DC07 for critical parts.
13. Flat grinding
The non-alloyed steels are magnetisable and can be fixed by magnetic clamping devices
of flat grinding machines.
14. Welding
DThe non-alloyed steels can be welded easily without problems.
15. Corrosion resistance
The alloy 1.0338 is not corrosion resistant. We supply this alloy with a light oil film.
If used at normal conditions this alloy needs to be painted or galvanized.
Important Annotation
The specifications which are given in this technical information sheet about the condition
and application of the alloys are only for reference and are no confirmation about certain
performances and characteristics.
The information correspond to our own experiences and experiences of our suppliers.
We can not guarantee for the results during processing and utilisation.