Stainless Steel Grade AISI 430F | EN 1.4105 | DIN X6CrMoS17 | EN 1.4104

AISI 430F | EN 1.4105 | DIN X6CrMoS17 and EN 1.4104 | DIN X14CrMoS17 are close in chemical composition and some properties to stainless steel grade AISI 430 (EN 1.4016). But there is a slight difference. The differences are in the addition of sulfur and molybdenum to their composition. Sulfur makes the chips easily breakable during processing. Sulfur is as dangerous as oil, so the processing process can be done very quickly using these grades of stainless steel. Since sulfur reduces the level of corrosion resistance, a small addition of molybdenum was added to this grade.

As for the differences in chemical composition between EN 1.4105 (DIN X6CrMoS17) and EN 1.4104 (DIN X14CrMoS17), they are due to the different amounts of carbon in their composition. The EN 1.4104 grade has a higher carbon level than the EN 1.4105 grade. Therefore, EN 1.4104 stainless steel can be subject to thermal stress, while EN 1.4105 cannot be subject to thermal stress. Since both of these alloys are very similar, they can be used as alternatives to each other in many applications. EN 1.4104 alloy can also have good machinability, but AISI 430F (EN 1.4105) has much better machinability.

Welding

Stainless steel grade AISI 430F cannot (and is not advisable) be welded due to its high sulfur content. If necessary, welding can be performed using low temperatures and appropriate filler metal.

Machinability

Stainless steel grade AISI 430F | EN 1.4105 | DIN X6CrMoS17 | EN 1.4104 | DIN X14CrMoS17 can be processed with good feed and speed.

Hot processing

This grade of steel can be hot-treated. First bring the material temperature to 816 °C, and then gradually to 1066 °C - 1149 °C.

Cold processing

Stainless steel grade AISI 430F can only withstand moderate cold stamping.

Annealing

Can be annealed at temperatures from 677 °C to 760 °C and then air cooled.

Hardening

Stainless steel grade AISI 430F cannot be heat treated.

Mechanical properties

Table: mechanical properties of stainless steel grade AISI 430F | EN 1.4105 | DIN X6CrMoS17 | EN 1.4104 | DIN X14CrMoS17
Tensile strength MPa	550
Yield strength MPa	310
Relative elongation ≥ %	25
Hardness HB	230
Modulus of elasticity GPa	200

Physical properties

Table: physical properties of stainless steel grade AISI 430F | EN 1.4105 | DIN X6CrMoS17 | EN 1.4104 | DIN X14CrMoS17
Density g/cm³	7,72
*Specific heat capacity at +20°C, J/kgK**	460
*Thermal conductivity at +20°C, W/mK**	26
*Specific electrical resistance at +20°C, μOhmm**	0,60
Coefficient of linear expansion, 10^-6/°C	10,4 - 11,4
Magnetic properties	magnetic

Table: chemical composition of steel grade AISI 430F | EN 1.4105 | DIN X6CrMoS17 | EN 1.4104 | DIN X14CrMoS17
Chemical composition of steel grade AISI 430F \| EN 1.4105 \| DIN X6CrMoS17 \| EN 1.4104 \| DIN X14CrMoS17
Element →	C	Si	Mn	P	S	Cr	Mo	Fe
Grade ↓	C	Si	Mn	P	S	Cr	Mo	Fe
EN 1.4105	<0,08	<1,0	<1,5	<0,040	0,15-0,35	16,0-18,0	0,20-0,60	Other
EN 1.4104	0,10-0,17	<1,0	<1,5	<0,040	0,15-0,35	16,0-18,0	0,20-0,60	Other