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1.4112, DIN X90CrMoV18, AISI 440B

We can produce 1.4112, DIN X90CrMoV18, AISI 440B stainless steel round rods, 1.4112, DIN X90CrMoV18, AISI 440B forging,sheet,coil,and profiledstrip,Deformed steel,flat steel,mould,steel wire,have all specifications. With DuoNian production experience, strict control 1.4112, DIN X90CrMoV18, AISI 440B chemical composition and 1.4112, DIN X90CrMoV18, AISI 440B mechanical properties.From casting, forging, steel to hot and cold rolling process, heat treatment, etc, we have the control of professional engineers. We have advanced precision machining equipment, according to the requirements of users machining. in order to achieve the most satisfied with the user requirements.

Production specification

Round bar steel: 1mm to 3500mm
Square-shape steel: 1mm to 4000mm
Plate steel:0.1mm to 4000mm
Width: 10mm to 2500mm
Lenth: We can supply any lenth based on the customer's requirement.
Forging: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes
Tubings: OD: φ6-1800mm, with wall thickness ranging from 1-35 mm.
Finished goods condition: hot forging/hot rolling + annealing/normalizing + tempering/quenching + tempering/any conditions based on the customer's requirement
Surface conditions: scaled (hot working finish)/ground/rough machining/fine machining/based on the customer's requirement
Furnaces for metallurgical processing: electrode arc + LF/VD/VOD/ESR/Vacuum consumable electrode.
Ultrasonic inspection: 100% ultrasonic inspection for any inperfections or based on the customer's requirementExcellent service for all kinds of industries,with advantages of technologies, equipment and price.
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1.4112, DIN X90Cr MoV18, AISI 440B

Designation by Standards

Brand Name	LH No.	Mat. No.	DIN	EN	AISI
OCR6	933	1.4112	X90Cr MoV18	X90Cr MoV18	440B

Chemical Composition (in weight %)

C	Si	Mn	Cr	Mo	Ni	V	W	Others
0.90	max. 1.0	max. 1.0	18.0	1.10	-	0.10	-	-

Description
This is a high carbon martensitic stainless with moderate corrosion resistance good strength and the ability to obtain and keep excellent hardness (HRC 58) and wear resistance.

Applications
Ball bearings and races, gage blocks, molds and dies, cutlery, valve components, knives and measuring instruments.

Physical properties (avarage values) at ambient temperature
Modulus of elasticity [10³ x N/mm²]: 190-210
Density [g/cm³]: 7.68
Thermal conductivity [W/m.K]: 15.0

Coefficient of Linear Thermal Expansion 10^-6 ^oC^-1

20-100^oC	20-200^oC	20-300^oC	20-400^oC	20-500^oC	20-600^oC	20-700^oC	20-800^oC
9.8	10.5	10.9	11.2	11.3	11.3	11.5	11.8

Continuous Cooling Transformation (CCT) Diagram

Time-Temperature Transformation (TTT) Diagram

Click the image to enlarge the diagram.

Soft Annealing
Heat to 810-860^oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 265.

Stress Relieving
Stress relieving to remove machining stresses should be carried out by heating to 650^oC, holding for one hour at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.

Hardening
Harden from a temperature of 1000-1050^oC followed by oil quenching. Hardness after quenching is 56 HRC.

Tempering
Tempering temperature: up to 150^oC.

Tempering Temperature (^oC) vs. Hardness (HRC)

100^oC	200^oC	300^oC	400^oC	500^oC	550^oC	600^oC	650^oC	700^oC
56	54	52	53	54	51	40	33	29

Tempering Diagram

Forging
Pre-heat to 760^oC, then bring slowly up to 1038-1204^oC before proceeding. Do not work this material below 927^oC. Cool material slowly after working and once at room temperature, anneal fully.

Machinability
Best machined in the annealed condition. Tough, stringy chips can be best handled by the use of chip breakers. Carbide or ceramic tooling is recommended.

Corrosion Resistance
Resistant to a wide variety of media including fresh water, steam, petroleum products and alcohol.

Welding
This alloy is not commonly welded due to its tendency to air harden. If it must be welded, preheat to 260^oC and post weld treat at 732-760^oC for 6 hours followed by a slow furnace cooling to avoid cracking.

Cold working
This alloy is considered only slightly cold workable by common practices.

Mechanical properties

1.4112, DIN X90CrMoV18, AISI 440B Mechanical properties,Our production completely according to the 1.4112, DIN X90CrMoV18, AISI 440B standards to meet the 1.4112, DIN X90CrMoV18, AISI 440B mechanical performance, can also according to the customer request, to meet the requirements of customers of 1.4112, DIN X90CrMoV18, AISI 440B mechanical properties.

Heat treatment

1.4112, DIN X90CrMoV18, AISI 440B Heat treatment,Our production completely according to the 1.4112, DIN X90CrMoV18, AISI 440B standards to meet the 1.4112, DIN X90CrMoV18, AISI 440B Heat treatment, can also according to the customer request, to meet the requirements of customers of 1.4112, DIN X90CrMoV18, AISI 440B Heat treatment.

Machining

1.4112, DIN X90CrMoV18, AISI 440B Machining,Our production completely according to the 1.4112, DIN X90CrMoV18, AISI 440B standards to meet the 1.4112, DIN X90CrMoV18, AISI 440B Machining, can also according to the customer request, to meet the requirements of customers of 1.4112, DIN X90CrMoV18, AISI 440B Machining.

Welding performance

1.4112, DIN X90CrMoV18, AISI 440B Welding performance,Our production completely according to the 1.4112, DIN X90CrMoV18, AISI 440B standards to meet the 1.4112, DIN X90CrMoV18, AISI 440B Welding performance, can also according to the customer request, to meet the requirements of customers of 1.4112, DIN X90CrMoV18, AISI 440B Welding performance.

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