1J117 Bright Bar
A 1J117 Bright Bar is a precision-engineered,cold-finished metal bars made from 1J117 soft magnetic alloy,featuring a smooth,mirror-like surface finish and highly precise dimensional tolerances.They are optimized for electromagnetic applications that require both excellent magnetic properties and resistance to harsh environments.
Material Core: 1J117 Soft Magnetic Alloy
- Magnetic Performance:
It has high magnetic permeability,high saturation induction,and low coercivity.It magnetizes strongly in a magnetic field but loses its magnetism quickly when the field is removed. - Химический состав:
It contains roughly 17.0% to 18.5% Chromium mixed with Iron,and often includes a small amount of Titanium to improve stability. - Устойчивость к коррозии:
The high chromium content gives it the anti-rust and anti-corrosion properties of stainless steel,making it ideal for wet or chemically aggressive environments.
Applications of 1J117 Bright Bar
- Solenoid Cores
- Control Valves
- Fuel Injectors
- Magnetic Sensors
- Relay Armatures
- Marine Controls
- Медицинское оборудование
- Actuator Plungers
- Avionics Instruments
- Chemical Pumps
We offer 1J117 bright bars in diameters ranging from OD ∮6mm to 101mm,manufactured in compliance with GB/T 14986 / ASTM A838.In addition to stainless steel bright bars,we supply high-performance alloy pipes made from Hastelloy, Incoloy, Inconel, and Monel—fully compliant with PED 2014/68/EU and CE marks for pressure equipment.All our production and testing processes are certified to ISO 9001,and products are delivered with EN 10204 3.1 Mill Test Certificates.With over a decade of experience in manufacturing,import,and export,we are your most trusted wholesaler in China.
Chemical Composition of 1J117 Bright Bar
The chemical composition of 1J117 bright bar is strictly defined by the Chinese precision alloy standard GB/T 14986.4-2018.As a ferritic soft magnetic stainless steel (similar to 430FR),its performance relies entirely on a precise ratio of Chromium,low Carbon,and trace stabilizing elements.
| Cr | Ti | Mn | Ni | Si | C | п | S | Fe |
|---|---|---|---|---|---|---|---|---|
| 17.0 – 18.50 | 0.30 – 0.70 | 0.30 – 0.70 | 0.50 – 0.70 | ≤ 0.15 | ≤ 0.03 | ≤ 0.02 | ≤ 0,015 | Остаток |
Metallurgical Logic Behind the Composition
The chemical footprint of 1J117 is engineered to balance two competing physical traits:high magnetic response and high corrosion resistance.
- The Anti-Rust Matrix (High Cr):
Soft magnetic alloys like pure iron or Silicon-Steel rust instantly when exposed to moisture.Adding 17%–18.5% Chromium generates a passive chromium-oxide surface film,turning it into a specialized stainless steel. - The Purification Guard (Ultra-low C & Si + Ti):
Carbon atoms distort the crystal lattice of iron,creating internal stresses that trap magnetic domains (raising coercivity).By keeping Carbon under 0.03% and adding Titanium to “lock up” any remaining Carbon,the magnetic domains can rotate freely,keeping it “magnetically soft”.
Physical & Magnetic Properties
- Density: ~7.77 to 7.80 g/cm³.
- High Saturation Induction:
It maintains a high magnetic saturation threshold,allowing smaller components (like micro-solenoids) to carry heavy magnetic loads. - Low Coercivity:
Ensures the component demagnetizes instantly when electrical currents drop to zero,preventing mechanical “sticking” in automated valves.
Mandatory Heat Treatment
- Bright bars are cold-worked to achieve precise dimensions,which introduces mechanical stress.This stress severely damages the magnetic properties.
- The Process:
Finished 1J117 parts must undergo vacuum magnetic annealing. - The Parameters:
Heating to 1150°C – 1200°C for 2–6 hours,followed by a meticulously controlled slow cooling rate down to 200°C before releasing.This restores the magnetic performance optimized by its chemical formulation.
Mechanical & Machining Advantages
Thanks to the addition of Manganese and optimized grain boundaries,1J117 bright bar shows a tensile strength around 390 MPa.The “Bright” finish ensures a straight,oxide-free surface that eliminates tool wear on high-speed automatic Swiss CNC lathes,yielding flawless surface finishes on complex solenoid plunger designs.
1J117 Bright Bar Standards & Equivalent Designations
| 1J117 (Corrosion-Resistant Ferritic Soft Magnetic Alloy) | |||||
|---|---|---|---|---|---|
| Стандарт / Система | Эквивалентное обозначение | Форма продукта | GB / GB/T (China) | GJB (Military) | ASTM / AISI (USA) |
| Китайский стандарт | 1J117 | Bright Bars & Wire | GB/T 14986.4 | GJB 3323A | ASTM A838 |
| Russian / CIS Standard | 16Ch-VI (16Х-ВИ) | Cold-Drawn Wire | GB/T 14986.1 | – | ASTM A582 |
| ISO Chemical Name | FeCr17MoTi / FeCr18 | Hot-Rolled Bars | – | – | – |
| UNS | S43020 / S43035 | Forged Billets | – | – | – |
| Aviation / Automotive | 430FR / 430F | Strips & Sheets | – | – | – |
| European / DIN Designation | X12CrMoS17 / 1.4104 | ||||
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Mechanical Properties of 1J117 Bright Bar
The mechanical properties of 1J117 bright bar is closely intertwined with their metallurgical state.Because 1J117 is a ferritic soft magnetic precision alloy,it is designed to achieve a balanced mechanical profile:moderately high strength to withstand automated machining,and sufficient ductility to be cold-formed without cracking.
| Mechanical Metric | As-Cold-Drawn / Ground State | Post-Vacuum Annealed State |
|---|---|---|
| Предел прочности | 550 – 750 MPa | 390 – 490 MPa |
| Предел текучести | 450 – 600 MPa | 240 – 310 MPa |
| Удлинение | 8% – 15% | 25% – 37% |
| Твердость | 190 – 240 HB | 130 – 170 HB |
The Mechanical-Magnetic Conflict
- Cold finishing processes (like cold drawing or centerless grinding) distort the metal’s internal grain matrix,dramatically boosting the tensile strength and hardness via work-hardening.However,this internal stress anchors the magnetic domains,destroying the soft magnetic performance (raising coercivity).
- 1J117 bright bars are delivered in the cold-drawn state to maximize machinability on automated CNC lathes.
- After machining,components must undergo high-temperature vacuum magnetic annealing (1150°C–1200°C).This drops the mechanical properties back down to the “Post-Annealed State” while unlocking peak magnetic permeability.
Machinability Profile on CNC Equipment
Because 1J117 contains up to 18.5% Chromium with a very low Carbon content,it behaves similarly to ferritic stainless steels during cutting.
- It is prone to “gummy” chips if cut when fully soft.
- Delivering the bars with a bright-drawn hard finish yields continuous chip breaks,clean thread cutting,and excellent dimensional fidelity.
Impact Fatigue Resistance
Solenoid valve plungers made from 1J117 bright bars cycle millions of times,hammering repeatedly against a valve seat.The alloy’s post-annealed high elongation ensures high impact toughness,allowing the valve armature to absorb continuous mechanical shock without fracturing or chipping off debris that could clog fluid systems.
Our Advantages in Manufacturing 1J117 Bright Bar
Precision Tolerance Control
We utilize state-of-the-art centerless grinding and cold-drawing technology to guarantee ultra-tight dimensional tolerances up to h9 or h11 classification.Our 1J117 bright bars feature a flawless,scale-free mirror finish that minimizes friction and completely eliminates superficial surface imperfections.Because of their outstanding straightness and uniform diameters,these bars can be directly fed into high-speed automatic Swiss CNC lathes,which significantly cuts down on material preparation times and prevents cutting tool wear for our clients.
High Material Purity
Our 1J117 alloy undergoes advanced Vacuum Oxygen Decarburization or Argon Oxygen Decarburization melting to keep harmful impurities like Carbon and Silicon at ultra-low thresholds.This precise chemical control and Titanium stabilization ensure an optimal grain matrix, allowing the machined parts to unlock peak magnetic permeability and ultra-low coercivity during final magnetic annealing.By expertly balancing the 17.0% to 18.5% Chromium content,we deliver premier corrosion resistance without ever compromising the material’s soft magnetic responsiveness.
Certified Global Compliance
Our entire manufacturing and testing infrastructure operates in strict compliance with international quality frameworks,backed by active certifications for ISO 9001,PED 2014/68/EU,and CE marks.To ensure complete accountability,every shipment of bright bars is accompanied by an authoritative EN 10204 3.1 Mill Test Certificate detailing exact heat numbers,chemical compositions,and mechanical test data.While we manufacture in accordance with the Chinese GB/T 14986.4 standard,we guarantee performance parameters that align seamlessly with global equivalents like American ASTM A838.
Extensive Supply Expertise
With over a decade of specialized manufacturing,import,and export experience,we thoroughly understand the strict technical standards, custom packaging requirements,and smooth logistical workflows required by global industrial buyers.Beyond our core inventory of precision 1J117 bright bars ranging from OD 6mm to 101mm,we serve as a versatile one-stop partner by supplying high-performance alloy pipes in Hastelloy, Inconel, Incoloy, and Monel.As a premier wholesaler in China,we leverage this robust supply network to offer highly competitive pricing alongside flexible order volumes.
FAQs About 1J117 Bright Bar
It contains a high Chromium content,which forms a passive oxide layer to resist rust,moisture,and mild chemical exposure.Concurrently,by keeping its Carbon content ultra-low and adding Titanium,the internal crystal lattice allows magnetic domains to rotate freely,enabling soft magnetic performance.
They are typically delivered in the cold-drawn or centerless ground (work-hardened) state.This state provides a hardness of 190–240 HB,which ensures straightness,uniform diameter,and excellent chip-breaking machinability on automatic CNC lathes.
Да.Machining and cold drawing introduce mechanical stress that severely degrades magnetic properties (raising coercivity).To restore peak magnetic permeability,finished parts must undergo vacuum magnetic annealing (heating to 1150°C–1200°C in a vacuum,followed by slow,controlled cooling).
We supply 1J117 bright bars in outer diameters ranging from 6mm to 101mm.Custom diameters,lengths,and specific dimensional tolerance classes (such as h9 or h11) can be manufactured upon request.
Every shipment is accompanied by an official EN 10204 3.1 Mill Test Certificate.This document provides complete metallurgical traceability,detailing the exact melt heat number,chemical composition breakdown,and mechanical test results.
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- +86 577 8551 1171
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- https://www.kaysuns.com/
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