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1.4435 X2CrNiMo18.14.3 UREA 316L Mod Stainless Steel Round Bar
We are one leading producer of AISI 316L Mod forged round bars,
AISI 316L Mod forging round bars, AISI 316LMod, AISI 316 L Mod
forged/forging round bars, 724L, 724 L forging/forged round bars,
316LMOD forged/forging round bars, 1.4435 forging/forged round bars
factory from china
We could produce AISI 316L Mod, 724L, 1.4435 forging/forged round
bars with diameters ranging from 10MM to 6000MM and with weights
from 10KGS to 15000KGS
The melting method of AISI 316L Mod, 724L, 1.4435 material is
ESR+VIR or VIM+ESR+VAR
Our AISI 316L Mod, 724L, 1.4435 forged/forging round bars are
widely used in in chemical plants and heavy vessels, pump and valve
producers, and industrial blades. Separators and centrifuges,
Cement industry and sugar industry, drilling platform, drilling
rig, pipelines and refineries, power generation and power plants, ,
generators, compressors, gear boxes. Oil & gas industry,
concrete mills and mixers, processing units, crystalizer equipment
and so on
Our AISI 316L Mod, 724L, 1.4435 forged/forging round bars could be
100% Ultrasonic Inspection as per the forging parts UT Test
standard of ASTM A 388 or EN10228.
We could supply AISI 316L Mod, 724L, 1.4435 forged/forging round
bars material certificate as per the standard of EN10204-3.1 or
EN10204-3.2 of third party
Any inquiry of AISI 316L Mod, 724L, 1.4435 forged/forging round
bars, please feel free to contact us. We are glad to quote the best
price for every clients
Heat treatment:
Normalized / Annealed / Quenched / tempered
Surface Treatment:
painting,plating,polishing,black oxide,transparent anti-rust oil
Quality control:
UT,MT,RT,PT,chemical composition test,mechanical property test,etc.
Inspection:
1, Raw material certificate(material chemical composition) 2, Heat
treatment sheet report
3, Dimension inspection report 4, UT test report
Delivery condition:
Hot forged +Rough machined (black surface after Q /T)+ Turned
Competitive Advantage:
Quality control and management to the whole produce process,
including ingot smelting, forging, heat treatment, machining and
strictly final inspection prior to delivery.
Excellent product quality and service, competitive price, "in-time"
delivery
316Lmod urea steel (1.4435,18-14-3)
UREA 316L Modified grade has been specially developed for Urea
plant applications. It is a 316L modified stainless steel with
extra-low silicon content and substantial higher molybdenum
contents.
The low carbon content, combined with a well balanced chemistry
(low silicon and nickel content close to 14%) makes the alloy fully
austenitic, free of intermetallic phase precipitations. The ferrite
level is kept under 0.5% in the solution annealing and water
quenched conditions.
The alloy is designed for improved corrosion resistance properties
in Urea- carbonate environments.
Typical chemistry of filler materials to be used is as follow
Cr Ni Mo Mn N
20% 16% 3% 6.5% 0.2%
EN 10088 / EN 10028 ......... X2 Cr Ni Mo 18-14-3 - 1.4435
AFNOR................................Z3 CND 18.14.03
DIN...................................... W.Nr 1.4435
ASTM. ............................... 316L modified
Alloy CLI UREA Modified is a fully austenitic stainless steel which
ferrite content is guaranteed less than 0.5% after solution
annealing heat treatment (1120-1180C (2048-2156F) /water quenched).
The carbon content is kept low while the steel making is optimised
in order to improve the cleanliness properties of the steel. The
alloy is designed for urea applications (low carbon and silicon
contents).
Typical maximum corrosion results required following different
specifications after Huey tests (ASTM A262 C - five periods of 48
h.) are : maximum weight loss lower than 3,3 µm/48 h (ª 130 mg/dm²
per 24 h.), with a maximum depth for microcracks of 200 µm in the
long direction and 70 µm in the transverse direction.
Hot forming
Hot forming should be carried out in a temperature range of
1200-950C (2732- 1742F) after the piece has been uniformely heat
treated. Final full annealing tremperature is required to obtain
the requested microstructure. It will be performed at 1120-1180C
(2048-2156F) followed by water quenching.
Cold forming
Due to its fully austenitic microstructure, the alloy can be cold
formed without any problem. The higher molybdenum content and cold
hardening behaviour of the steel explains that it may require more
powerfull equipments than 304 stainless steel.
Pickling
The UREA Modified grade must be used in the as pickled and
passivated conditions. Pickling treatment may be performed with a
nitro-hydrofluoric acid bath (10-20 % HN03 - 1.5-5% HF) at room
temperature (few hours) or 20 minutes approx. at 60C (140F). 10-20%
H2SO4 - 1.5-5% HF pickling bath may also be used.
Alloy UREA Modified can be welded with most of the welding
processes : TIG, Plasma, MIG welding, as well as SMAW, SAW or FCAW
processes.
The alloy is sensitive to hot cracking phenomenon due to its fully
austenitic microstructure.
Weld should be performed in order to obtain extra-low ferrite
contents, no carbide or nitrides precipitations, low silicon
contents as well as no intermetallic phases precipitations.
Higher manganese content products should be considered.
Use basic coated electrodes or fluxes in order to decrease the hot
cracking susceptibility. The heat input should be limited to 1,5
kJ/mm and interpass temperature kept below 150C (302F).
Typical corrosion test results in Huey test solution - ASTM A262-C
are as follow :
maxi weight loss 3.3 µm/48h - 0,54 g/m² h with selective attack
lower than 200 µm.
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