1.4418 Round Bar | Steel grade 1.4418 in stainless steel
Reliant Pipes & Tubes Pvt. Ltd.

1.4418 Round Bar | Steel grade 1.4418 in stainless steel

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1.4418 Round Bar | Steel grade 1.4418 in stainless steel

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1.4418 (165M – SS2387)

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:

  • Processing vessels and equipment for thermo mechanical pulp industry
  • Equipment for hydro power stations
  • Mixer and stirrer production
  • Water turbine parts
  • Propeller shafting
  • Shafting
  • Bolts
  • Shear pins
  • Piston rods

Good weldability
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.

Certificate
The steelworks has certificate as an approved material supplier of this steel grade from ABS, BV, DNV, GL, Lloyd’s and RINA.

We offer steel grade 1.4418 in the following profiles

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
AISI  AFNOR Z6CND16-05-01 JIS 
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.

Stock range

1.4418 round bar brightdrawn/ground tol. h9 acc. to DIN EN 10278 in lengths of 3 mtr
Sizes:

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
Sizes:

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

ALLOY 1.4418 / S165M / 2387

Corresponding Standards: EN 1.4418, S165M, 2387, X4CrNiMo16-5-1

MATERIAL DESCRIPTION

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.

CHEMICAL COMPOSITION

WEIGHT% C SI MN S P CR NI MO N
MIN.  0,30  0,60  0,005  15,00  4,00  0,80  ≥ 0,020
MAX. ≤ 0,06  0,70  ≤ 1,50  ≤ 0,030  0,040  0,040 17,00  6,00  1,50

PRODUCT STANDARDS: ASTM A276, ASTM A479, EN10088-3

APPLICATIONS

The alloy has been designed to resist erosion corrosion or cavitation experienced in hydraulic applications. General areas for applications: Shafts, propellers, spindles, bolts, etc.

MECHANICAL PROPERTIES

CONDITION YIELD STRENGTH
RP0.2
MPA
TENSILE STRENGTH
RM
MPA
ELONGATION
[%]
HARDNESS
[HB]
IMPACT
CHARPY-V, -40ºC
[J]
BAR  ≥ 750  900 – 1100  ≥ 16  280 – 340  ≥ 32
 QT900  920  1050  18  300  100

HEAT TREATMENT

Austenitize and quench from 950 to 1050°C and immediate temper at 600°C for 8 hours followed by cooling in air.

WELDABILITY

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

DESCRIPTION KG/M DESCRIPTION KG/M
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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