EN 1.4568, ASTM TYPE 631 Stainless Steel

EN 1.4568, ASTM TYPE 631 Stainless Steel

EN 1.4568, ASTM TYPE 631 Stainless Steel General Characteristics Precipitation hardening grade with high strength and hardness, good corrosion resistance and satisfactory formability (depending on heat treatment/”Condition”). For e.g. retaining rings, springs, valves and gears, aircraft parts....
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EN 1.4568, ASTM TYPE 631 Stainless Steel

General Characteristics

Precipitation hardening grade with high strength and hardness, good corrosion resistance and satisfactory formability (depending on heat treatment/”Condition”). For e.g. retaining rings, springs, valves and gears, aircraft parts.


Typical Applications

  • Retaining rings

  • Springs

  • Valves and gears

  • Aircraft parts


Chemical Composition

The typical chemical composition for this grade is given in the table below, together with composition limits given for the product according to different standards. The required standard will be fully met as specified on the order.

The chemical composition is given as % by mass.


CMnCrNiOther

Typical

0.08


17.0

7.0

Al:1.0

EN 10088-2

≤0.09

≤1.0

16.0-18.0

6.5-7.8

Al:0.7-1.5

EN 10088-3

≤0.09

≤1.0

16.0-18.0

6.5-7.8

Al:0.7-1.5

EN 10088-4

≤0.09

≤1.0

16.0-18.0

6.5-7.8

Al:0.7-1.5


Mechanical Properties

StandardRp0.2Rp1.0RmElongationHB

MPa

MPa

MPa

%


Product type: Cold rolled coil and sheet

EN 10088-2

≤ 1030

≥ 19


Product type: Hot rolled coil and sheet

Typical (thickness 4 mm)

330

360

850

37

94

Product type: Hot rolled quarto plate

Typical (thickness 15 mm)

210

240

700

50


Product type: Wire rod

Typical

210

240

700

50



Physical Properties

DensityModulus of elasticityThermal exp. at 100 °CThermal conductivity

kg/dm3

GPa

10-6/°C

W/m°C

7,8

200

13

16


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