Moda 410S/4000
EN 1.4000, ASTM TYPE 410S / UNS S41008

General characteristics

Outokumpu 4000 is a ferritic chromium stainless steel  and common features of the ferritic steel grades are:

  • Good formability, especially at deep drawing applications
  • Not susceptible to stress corrosion cracking
  • Higher heat conductivity compared to austenitics
  • Rather low heat expansion coefficient
  • Supplied with a range of functional and aesthetic surface finishes

Typical applications

Typical applications can include mining equipment, petroleum and petrochemical equipment, press plates and thermal process equipment.


Product forms, available sizes and finishes


Product typeFinishesThicknessWidth
Black hot band1U3,00-6,001000-1550
Cold rolled coil2B, 2BB, 2C, 2D, 2E, 2G, 2J, 2R0,05-4,003-1530
Cold rolled sheet2B, 2BB, 2D, 2E, 2G, 2J, 2R0,30-4,0018-1530
Hot rolled coil, pickled1C, 1D, 1G, 1U2,00-8,0050-1550
Precision strip2R0,05-1,503-649


Product typeFinishesThicknessWidth
Cast billet127,00-180,00127-180
Chemical composition

The typical chemical composition is shown in the table below.


Typical 0.0312.5
ASME II A SA-240 ≤0.08≤1.0011.5-13.5≤0.60
ASTM A240 ≤0.08≤1.0011.5-13.5≤0.60
EN 10088-2 ≤0.08≤1.012.0-14.0
EN 10088-3 ≤0.08≤1.012.0-14.0
Mechanical properties

The mechanical properties of the available products are given in the table below.


StandardRp0.2Rp1.0RmElongationImpact strengthRockwellHBHV
Product type: Cold rolled coil and sheet
Typical (thickness 1 mm)320340440
ASME II A SA-240 ≥ 205 ≥ 415 ≤ 183
ASTM A240 ≥ 205 ≥ 415 ≤ 89HRB ≤ 183
EN 10088-2 ≥ 240400-600 ≥ 19
Product type: Hot rolled coil and sheet
Typical (thickness 4 mm)3003254303574
ASME II A SA-240 ≥ 205 ≥ 415 ≤ 183
ASTM A240 ≥ 205 ≥ 415 ≤ 183
EN 10088-2 ≥ 220400-600 ≥ 19
Product type: Hot rolled quarto plate
Typical (thickness 15 mm)27032049030
ASME II A SA-240 ≥ 205 ≥ 415 ≤ 183
ASTM A240 ≥ 205 ≥ 415 ≤ 183
EN 10088-2 ≥ 230400-600 ≥ 19

1)Elongation according to EN standard:
A80 for thickness below 3 mm.
A for thickness = 3 mm.
Elongation according to ASTM standard A2” or A50.

Corrosion resistance

For more information see Outokumpu Corrosion Handbook.

Pitting corrosion resistanceCrevice corrosion resistance

PRE Pitting Resistant Equivalent calculated using the formula: PRE = %Cr + 3.3 x %Mo + 16 x %N
CPT Corrosion Pitting Temperature as measured in the Avesta Cell (ASTM G 150), in a 1M NaCl solution (35,000 ppm or mg/l chloride ions).
CCT Critical Crevice Corrosion Temperature is the critical crevice corrosion temperature which is obtained by laboratory tests according to ASTM G 48 Method F



Physical properties

Data according to EN 10088, EN 10095 or typical values.


DensityModulus of elasticityThermal exp. at 100 °CThermal conductivityThermal capacityElectrical resistanceMagnetizable

Outokumpu 4000 is sensitive to grain growth since less martensite is formed compared to similar grades. For this reason, low heat input shall be used. Austenitic fillers are most common, but at service temperatures above 450ºC , a nickel-base filler of EN ISO 6082 type is advantageous. The shielding gas for MAG should be based on Ar/He, mixed with some oxygen to improve arc stability.


Standards & approvals

The most commonly used international product standards are given in the table below.


ASME SA-240M Code Sect. II. Part ATYPE 410S / UNS S41008
ASTM A240/A240MTYPE 410S / UNS S41008
EN 10088-21.4000
EN 10088-31.4000