Ni Resist4 Tonnes

Austenitic Cast Irons

These are Irons alloyed with high percentages of Nickel and Chromium. Basically they are the iron equivalents of Stainless steel in their properties, but alas not their looks. Two basic types are available based on the type of carbon.

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The graphite appears as either flake, as in grey iron or spheroidal as in SG irons. The latter have greater mechanical properties than flake.

Both types, because of the high Nickel, have similar properties of heat resistance and good resistance to salt water and other corrosive materials. Chromium gives the resistance to erosion.

Ni Resist can exhibit low levels of magnetic permeability i.e. they can be non magnetic. Main uses: sea water pump valve parts and high temperature ovens / furnaces.

Selection of General Engineering Grades ASTM A436 & ASTM A439 439 A 439 436 A436 MIL G-858B

Part of Austentitic Cast Iron BS 3468: 1986
Grade N/mm² Material Properties
F1 170 - 240 Good resistance to corrosion of dilute acids, alkalis and sea water. Good heat resistance. Mining and flanges.
F2 170 - 240 Similar to F1but with more corrosion resistance to alkalis
S2 370 - 490 Similar to F2 but with superior mechanical properties: marine
S5 370 - 490 Excellent resistance to growth and scaling up to 850 deg. C Low thermal expansion and good thermal shock resistance
Descriptions of Modulus, the first number is the tensile strength. The second after the backslash is the percentage elongation before fracture.
ASTMA 436-84 ISO2892-1973 DIN1694 BS3468:1996 BSEN13835:2002
  Flake Graphite Ni-Resist    
NiMn13-7 L-NiMn13 7 GGL-NiMn13 7 - EN-JL3021
Type1 L-NiCuCr15 6 2 GGL-NiCuCr15 6 2 GradeF1 EN-JL3011
Type1b L-NiCuCr15 6 3 GGL-NiCuCr15 6 2 - -
Type2 L-NiCr20 2 GGL-NiCr20 2 GradeF2 -
Type2b L-NiCr20 3 GGL-NiCr20 3 - -
Nicrosilal L-NiSiCr20 5 3 GGL-NiSiCr20 5 3 - -
Type3 L-NiCr30 3 GGL-NiCr30 3 GradeF3 -
Type4 L-NiSiCr30 5 5 L-NiSiCr30 5 5 - -
Type5 L-Ni35 - - -
Type6 - - - -
  Spheroidal Graphite Ductile Ni-Resist    
TypeD-2 S-NiCr20 2 GGG-NiCr20 2 GradeS2 EN-JS3011
TypeD-2W - GGG-NiCrNb20 2 GradeS2W EN-JS3031
TypeD-2B S-NiCr20 3 GGG-NiCr20 3 GradeS2B -
NicrosilalSpheronic S-NiSiCr20 5 2 GGG-NiSiCr20 5 2 - -
TypeD-2C S-Ni22 GGG-Ni22 GradeS2C EN-JS3041
TypeD-2M S-NiMn23 4 GGG-NiMn23 4 GradeS2M EN-JS3021
TypeD-3A S-NiCr30 1 GGG-NiCr30 1 - -
TypeD-3 S-NiCr30 3 GGG-NiCr30 3 GradeS3 EN-JS3081
TypeD-4A - GGG-NiCr30 5 2 - -
TypeD-4 S-NiSiCr30 5 5 GGG-NiSiCr30 5 5 - EN-JS3091
TypeD-5 S-Ni35 GGG-Ni-35 - EN-JS3051
TypeD-5B S-NiCr35 3 GGG-NiCr35 3 - EN-JS3101
TypeD-5S S-NiSiCr35 5 2 GGG-NiSiCr35 5 2 GradeS5S EN-JS3061
TypeD-6 S-NiMn13 7 GGG-NiMn13 7 GradeS6 EN-JS3071