Material Datasheet                                                                                               Issue: October 2015

Download datasheet here

https://sbc-trading.fr/images/Image/File/Precision-gauge-strips-AISI-301.pdf

Temper rolled Spring Steel W.-Nr. 1.4310

1. Applications:

The alloy 1.4310 (AISI 301) has a good corrosion resistance due to a content of 17% Chromium and 7% Nickel. A high tensile strength is obtained by cold rolling. Compared to alloy 1.4301 (AISI 304) a much higher tensile strength of more than 2000 N/mm² can be reached. Because of this, the alloy 1.4310 is suitable for stainless feeler gage stock, precision foils, stainless springs and parts of higher strength. This alloy is little magnetic and can not be hold by magnetic tables of grinding machines. Available in more than 60 thicknesses between 0.003 and 3.0 mm and in different tensile strengths.

Further applications:

welded steel belts, transport belts

The alloy 1.4310 is suitable for spring according to DIN 17 224 (new: DIN EN 10 151).

At high demands for hardness and wear resistance we suggest the alloys 1.4031Mo (up to

0.80 mm thickness) and 1.4034 (1.0 to approx. 8.0 mm thickness).

* the exact composition of each batch can be documented by a test certificate 2.2 or 3.1 according to DIN 10 204

4.  Delivery condition:

Condition:                     temper rolled (austenitic and partially martensitic), not hardenable Surface:   2H, Ra maximal 0,3 µm (depending of the roughness of the working

roll)

Tensile strength:         1100 up to more than 2000 N/mm²

The tensile strength can be increased by annealing at 330-370°C (approx. 4 hours) for 100- 300 N/mm² (depending on the primary tensile strength of the material).

Further mechanical data: see chapter 7 and 8.

5.  Sizes:

Thickness:                    0,003-3,00 mm

Raw material width:    depending on thickness 50 up to approx. 1000 mm in several tensile strengths

Standard widths:         10,0 – 12,7 – 25 – 50 – 100 – 150 mm in tensile strength 15-1700 Edges:      cut

Lengths:                        variable lengths from 5 to 10 000 mm or as Coil

The following maximum widths are available from stock: (without obligation, Issue: November 2014)

6.  Tolerances:

Thickness tolerance: DIN EN 9445 Table 1 or T3 (for U.T.S. 15-1700 N/mm²) Widthtolerance:        according to DIN EN 9445

Straightness:                normal

Flatness:                       wave height max. 1,0 mm

7.  Further mechanical properties

Yield Str. Rp0,2 :         depending on tensile strength Elongation A 80:     depending on tensile strength

If good tumbling is done, the following values can be achieved: Reversed bending stress (Mean stress = 0):

550 MPa (50 % of the tested samples survive 2 million cycles at normal environment), if bending direction is at a 90° angle to the rolling direction

Fluctuating bending stress (Minimum stress = 0):

420 MPa (50 % of the tested samples survive 2 million cycles at normal environment), if bending direction is at a 90° angle to the rolling direction

As the fatigue strength depends on different factors like the corrosive conditions and the edge treatment, no definitive endurance limit values can be guaranteed.

At high forces or bending not in the right angle to the rolling direction hardened steels like the alloy 1.4031Mo are strictly recommended.

The operation temperature should not exceed 120-250°C (compare to DIN 17224 – stainless strip steel for springs). Please remember that the modus of elasticity decreases at higher temperatures.

8.  Physical properties:

Density:                                 7,9 g/cm³

Thermal conductivity:          15-19 W/(m °C) depending on the temperature Spec.heat capacity:       500 J/(kg °C) mean value at 50 – 100 °C Thermal expansion:   15,5 x 10 -6 (between30 - 100 °C)

16,0 x 10 -6 (between 30 - 200 °C)

16,5 x 10 -6 (between 30 - 300 °C) Electricresistance:       0,73 Ohm x mm²/m

Modus of elasticity:             185 000 MPa at 20 °C

Relative Permeability µr:    maximal 24 (further data: 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

The alloy 1.4310 can be etched easily.

12.  Bending

As the high hardness of 1.4310 is obtained by temper rolling, the rolling direction has a big influence on the bending.

The suggested minimum bending radius also depends on the tensile strength. Bending at right angle (90°) to the rolling direction:

t = Strip thickness