By using 1.4418 (165M – SS2387) you get a high tensile strength stainless steel with good weldability. It is designed for use in slightly corrosive environments. Some typical application areas are water turbine parts, propeller shafting, shafting, piston rods and equipment for hydro power stations.
Steel grade 1.4418 (also called 165M and SS2387) is a high strength stainless steel with high strength , toughness and very good fatigue resistance. It has good weldability and the strength and toughness are maintained after welding. The steel has better corrosion properties than most of the martensitic stainless steels and is suiteable for production of details for slightly corrosive environments. 1.4418 appears to its best advantage in slightly to moderately corrosive environments like organic acids, some inorganic acids and salt solutions but it should not be used in non agitated seawater without a cathodic protection.
Some typical application areas for 1.4418 are:
1.4418 is possible to weld and shall be welded with welding consumables similar to that of the parent one. Preheating and heat treatment after welding is normally not necessary, except for heavy structures. Hot forming is possible. Heat treatment condition for 1.4418 is QT 900.
The steelworks has certificate as an approved material supplier of this steel grade from ABS, BV, DNV, GL, Lloyd’s and RINA.
Steel grade 1.4418 is available as machined round bar, ground round bar and hard chromed round bar. It is available in dimensions 12 – 460 mm depending on profile and execution.
If there is something you miss or wonder about you can always contact us to discuss your needs.
Stainless steel 1.4418 Acier Inoxydable
Rustfrit steel Acciai Inossidabli
Rostfrit steel Acero Inoxidable
|W.Nr. 1.4418||BS||SIS 2387|
|X4CrNiMo16-5-1||DIN 17740 1.4418|
C max 0,06% Cr 15,0 - 17,0 Mo 0,8 - 1,5 Ni 4,0 - 6,0 N min 0,02
1.4418 is characterised by its very good resistance to corrosion in aggressive media coupled with very good mechanical and impact properties. Due to its higher alloy content, 1.4418 is more resistant to corrosion than 1.4057 and the addition of molybdenum allows limited exposure to marine environments. As a result of its chemical composition and microstructure, 1.4418 is extremely resistant to intergranular corrosion, corrosion fatigue and stress corrosion cracking.
1.4418 round bar brightdrawn/ground tol. h9 acc. to DIN EN 10278 in lengths of 3 mtr
|Ø 10,00 mm||Ø 20,00 mm||Ø 40,00 mm||Ø 80,00 mm|
|Ø 12,00 mm||Ø 22,00 mm||Ø 50,00 mm|
|Ø 14,00 mm||Ø 25,00 mm||Ø 55,00 mm|
|Ø 15,00 mm||Ø 30,00 mm||Ø 60,00 mm|
|Ø 16,00 mm||Ø 35,00 mm||Ø 70,00 mm|
1.4418 round bar hotrolled / forged, peeled / turned acc. DIN EN 10060 ( formerly DIN 1013 ), long 4-6 mtr
|Ø 25,00 mm||Ø 60,00 mm||Ø 95,00 mm||Ø 145,00 mm||Ø 210,00 mm||Ø 280,00 mm||Ø 380,00 mm|
|Ø 30,00 mm||Ø 65,00 mm||Ø 100,00 mm||Ø 150,00 mm||Ø 220,00 mm||Ø 300,00 mm||Ø 400,00 mm|
|Ø 35,00 mm||Ø 70,00 mm||Ø 110,00 mm||Ø 160,00 mm||Ø 230,00 mm||Ø 320,00 mm||Ø 405,00 mm|
|Ø 40,00 mm||Ø 75,00 mm||Ø 120,00 mm||Ø 170,00 mm||Ø 240,00 mm||Ø 330,00 mm||Ø 425,00 mm|
|Ø 45,00 mm||Ø 80,00 mm||Ø 125,00 mm||Ø 180,00 mm||Ø 250,00 mm||Ø 340,00 mm||Ø 450,00 mm|
|Ø 50,00 mm||Ø 85,00 mm||Ø 130,00 mm||Ø 190,00 mm||Ø 260,00 mm||Ø 350,00 mm|
|Ø 55,00 mm||Ø 90,00 mm||Ø 140,00 mm||Ø 200,00 mm||Ø 270,00 mm||Ø 370,00 mm|
Above Ø 450,00 mm up to Ø 705,00 mm sizes from stock available.
1.4418 Blocks / flat, sawn from forged primematerial
Sizes on request.
1.4418 sheets / plates plasma cutting / water-jet cutting / laser-cutting / sawn cuttings
Thickness 10 mm - 50 mm
Certificates: EN 10204 / 3.1
S165M is a high strength low carbon martensitic/ austenitic stainless steel. It combines high strength, good fatigue resistance with good weldability, properties which are maintained after welding. S165M is designed for application in slightly corrosive environment. Two minimum tensile levels are often used; QT760 and QT900. QT900 is mostly used by the industry. Corrosion resistance is at the level of AISI 304L in most environments, however insensitive to intergranular corrosion.
|MAX.||≤ 0,06||0,70||≤ 1,50||≤ 0,030||0,040||0,040 17,00||6,00||1,50|
The alloy has been designed to resist erosion corrosion or cavitation experienced in hydraulic applications. General areas for applications: Shafts, propellers, spindles, bolts, etc.
|CONDITION||YIELD STRENGTH |
|TENSILE STRENGTH |
|BAR||≥ 750||900 – 1100||≥ 16||280 – 340||≥ 32|
Austenitize and quench from 950 to 1050°C and immediate temper at 600°C for 8 hours followed by cooling in air.
Good, the low carbon martensite with the finely dispersed residual austenite yields an excellent HAZ toughness in the as welded
condition. Preheating to 100°C – 200°C is suggested for very thick section or when the stress concentration after cooling require it.
ALLOY 1.4418 / S165M ROUND BAR K12
ALLOY 1.4418 / S165M ROUND BAR GROUND H9
|41 mm k12 finish||10.6||10 mm ground h9||0,630|
|46 mm k12 finish||13.4||12 mm ground h9||0.910|
|51,2 mm k12 finish||16.5||16 mm ground h9||1.600|
|56,4 mm k12 finish||20.||20 mm ground h9||2.600|
|61,2 mm k12 finish||22.8||25 mm ground h9||3.900|
|66,2 mm k12 finish||27.7||30 mm ground h9||5.600|
|71,4 mm k12 finish||31.5||32 mm ground h9||6.500|
|81,4 mm k12 finish||41.||35 mm ground h9||7.700|
|86,4 mm k12 finish||47.||38 mm ground h9||8.900|
|91,4 mm k12 finish||52.7||40 mm ground h9||10.100|
|102 mm k12 finish||65.||45 mm ground h9||12.490|
|107 mm k12 finish||72.1||50 mm ground h9||15.700|
|112 mm k12 finish||79.||55 mm ground h9||18.700|
|115 mm k12 finish||83.3||60 mm ground h9||22.600|
|117 mm k12 finish||86.3||65 mm ground h9||26.000|
|122 mm k12 finish||93.8||70 mm ground h9||30.800|
|127 mm k12 finish||101.6||75 mm ground h9||35.500|
|132 mm k12 finish||109.8||80 mm ground h9||40.200|
|143 mm k12 finish||128.8||90 mm ground h9||50.900|
|153 mm k12 finish||147.5||100 mm ground h9||62.900|
|165 mm k12 finish||171.5||110 mm ground h9||75.000|
|173 mm k12 finish||189||120 mm ground h9||88.800|
|184 mm k12 finish||213||125 mm ground h9||96.300|
|190 mm k12 finish||227||140 mm ground h9||123.000|
|206 mm k12 finish||267|
|226 mm k12 finish||320|
|246 mm k12 finish||382|
|256 mm k12 finish||412|
|286 mm k12 finish||515|
|306 mm k12 finish||590|
|335 mm k12 finish||707|
|360 mm k12 finish||816|
|410 mm k12 finish||1058|
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