Ferritic Stainless Steels

Ferritic Stainless Steels

Ferritic Stainless Steels Ferritic stainless steels are stainless alloys or Iron – Chromium alloys with Chromium content between 10.5 to 30%.

These steels are straight chromium steels containing little or no nickel. The absence of nickel provides a relatively stable cost base for this material compared to austenitic stainless steels. Ferritic stainless steel has properties similar to mild steel but with the better corrosion resistance. 

The most common of these steels are 12% and 17% chromium containing steels, with 12% used mostly in structural applications and 17% in housewares, laundry applications and sugar industry. Ferritic grades are used extensively in automotive requirements.

The Characteristics of the ferritic grades are:

  • Good corrosion resistance, but generally not as good as 304/316 Austenitic
  • Good ductility
  • Fully magnetic
  • Immune from chloride stress corrosion cracking
  • Not suitable for use in low temperature applications
  • Can’t be further hardened by heat treatment and only slightly further cold worked
  • Stable ferrite structure

Grade and Typical application:

409 – Heat resistant steel, easily formed and welded. Mainly used for automotive exhausts or welded applications where superior performance to galvanised steel is required.

446 – Used for severe heat resistant applications up to 1200°C. In recuperators, highly resistant to sulphidation and oil ash corrosion.

1.4003 – Good corrosion resistance and readily weldable it provides a cost effective choice for many structural applications where mild or low alloyed steels require regular repair or replacement.

Grades

Grade
VAL1LC
EN #
-
AISI #
-
UNS #
S40940
EN Name
-
BS #
-
Grade
VAL1LCNI
EN #
-
AISI #
-
UNS #
S40976
EN Name
-
BS #
-
Grade
VAL1NI
EN #
-
AISI #
414
UNS #
S41400
EN Name
-
BS #
-
Grade
X7AL
EN #
1.4713
AISI #
-
UNS #
-
EN Name
X10CRALSI7
BS #
-
Grade
X11L
EN #
1.4003
AISI #
-
UNS #
S41003
EN Name
X2CRNI12/X2CR11
BS #
-
Grade
X17AL
EN #
1.4742
AISI #
-
UNS #
-
EN Name
X10CRALSI18/X10CRAL18
BS #
-
Grade
X17L
EN #
1.4016
AISI #
430
UNS #
S43000
EN Name
X6CR17
BS #
430S11/430S18
Grade
X17M
EN #
1.4113
AISI #
434
UNS #
S43400
EN Name
X6CRM017-1
BS #
434S20
Grade
X17MZ
EN #
1.4105
AISI #
430F
UNS #
S43020
EN Name
X6CRM0S17
BS #
-
Grade
X17NBL
EN #
1.4511
AISI #
-
UNS #
-
EN Name
X3CRNB17
BS #
-
Grade
X17T
EN #
1.4510
AISI #
430TI
UNS #
S43036
EN Name
-
BS #
-
Grade
X17Z
EN #
-
AISI #
430F
UNS #
S43020
EN Name
X14CRM0S17
BS #
-
Grade
X18DZ
EN #
-
AISI #
XM-34
UNS #
S18200
EN Name
-
BS #
-
Grade
X24AL
EN #
1.4762
AISI #
-
UNS #
-
EN Name
X10CRALSI25/X10CRAL24
BS #
-
Grade
X25R
EN #
-
AISI #
446
UNS #
S44600
EN Name
-
BS #
-
Grade
X182N
EN #
1.4521
AISI #
444
UNS #
S444000
EN Name
X2CRM0TI18-2
BS #
-