Skip to Content

Category Archives: Alloy Steel

25cr2mov steel grade GB Otai stockist

By

in

Alloy Steel

Posted

September 10, 2021 at 09:14

20Cr2Ni4 Alloy Steel Plate

20Cr2Ni4 Alloy Steel Plate

1）20Cr2Ni4 steel is a high-quality Cold work tool steel, It belongs to the high-quality high carbon alloy tool steel. Oil Quenched & Tempered Hardness is 423 HB.

25cr2mov steel grade GB Otai stockist

2） 20Cr2Ni4 Chemical composition

C(％) 0.17～0.23 Si(％) 0.17～0.37 Mn(％) 0.30～0.60 Cr(％) 1.25～1.65
Ni(％) 3.25～3.65

3） 20Cr2Ni4 Mechanical Properties

The mechanical properties of 20Cr2Ni4 tool steels are outlined in the following table.

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross-section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HB)
155 (≥) 945 (≥) 14 32 31 Solution and Aging, Annealing, Ausaging, Q+T, etc 423

4）20Cr2Ni4 Application:

MOULD STEEL

Roller Shaft

bevel gear

large cross-section carburized parts, shafts and components

 

0 0 Continue Reading →

By

in

Alloy Steel

Posted

September 6, 2021 at 10:19

1.6523 case hardening steel

1.6523 case hardening steel

1. AISI 8620 Steel | 1.6523 | 21NiCrMo2 | SNCM220

1.6523 Nickel–Chrome–Moly Carburising Steel

1.6523 has a high case toughness and above average core toughness due to the nickel content.

2. 1.6523 Steel Specification and Relevant Standards

Country USA DIN BS BS Japan
Standard ASTM A29 DIN 1654 EN 10084 BS 970 JIS G4103
Grades 8620 1.6523/
21NiCrMo2		 1.6523/
20NiCrMo2-2		 805M20 SNCM220

3. 1.6523 Steels & Equilvalents Chemical Composition

Standard Grade C Mn P S Si Ni Cr Mo
ASTM A29 8620 0.18-0.23 0.7-0.9 0.035 0.040 0.15-0.35 0.4-0.7 0.4-0.6 0.15-0.25
DIN 1654 1.6523/
21NiCrMo2		 0.17-0.23 0.65-0.95 0.035 0.035 ≦0.40 0.4-0.7 0.4-0.7 0.15-0.25
EN 10084 1.6523/
20NiCrMo2-2		 0.17-0.23 0.65-0.95 0.025 0.035 ≦0.40 0.4-0.7 0.35-0.70 0.15-0.25
JIS G4103 SNCM220 0.17-0.23 0.6-0.9 0.030 0.030 0.15-0.35 0.4-0.7 0.4-0.65 0.15-0.3
BS 970 805M20 0.17-0.23 0.6-0.95 0.040 0.050 0.1-0.4 0.35-0.75 0.35-0.65 0.15-0.25

4. 1.6523 Steel Mechanical Properties

Density (lb / cu. in.) 0.283
Specific Gravity 7.8
Specific Heat (Btu/lb/Deg F – [32-212 Deg F]) 0.1
Melting Point (Deg F) 2600
Thermal Conductivity 26
Mean Coeff Thermal Expansion 6.6
Modulus of Elasticity Tension 31

Properties Metric Imperial
Tensile strength 530 MPa 76900 psi
Yield strength 385 MPa 55800 psi
Elastic modulus 190-210 GPa 27557-30458 ksi
Bulk modulus (typical for steel) 140 GPa 20300 ksi
Shear modulus (typical for steel) 80 GPa 11600 ksi
Poisson’s ratio 0.27-0.30 0.27-0.30
Izod Impact 115 J 84.8 ft.lb
Hardness, Brinell 149 149
Hardness, Knoop (converted from Brinell hardness) 169 169
Hardness, Rockwell B (converted from Brinell hardness) 80 80
Hardness, Vickers (converted from Brinell hardness) 155 155
Machinability (hot rolled and cold drawn, based on 100 machinability for AISI 1212 steel) 65 65

5. Forging of Material 1.6523 Steel

1.6523 alloy steel is forged at a start temperature of around 2250ºF (1230ºC) down to approximately 1700ºF(925ºC.) prior to the hardening heat treatment or carburizing. The alloy is air cooled after forging.

6. 1.6523 Applications

Additionally, it is the most widely used carburizing alloy steel. Typical uses include: gears, cranks, shafting, axles, bushings, heavy duty pins, bolting, springs, hand tools,and many other machinery parts.

0 0 Continue Reading →

By

in

Alloy Steel

Posted

August 30, 2021 at 09:41

4140 Pre-Hard STEEL PLATE

4140 Pre-Hard STEEL PLATE

which offers greater wear resistance than lower grades of structural steel plate.

Otai has great advantage on 4140 steel plate:

  • 1500+ tons daily stock of 4140 alloy plate or flat bar.
  • Hot rolled / annealed / Q+T (PH prehardened) condition available. 
  • Thickness 4-300mm available for 1-3 days shipment.
  • Thickness 1-10mm cold rolled sheet for 30 days lead time.
  • Cut to width & cut to length service available.
  • Machined to tolerance & roughness pieces service available.
  • https://otaialloysteel.com/4140-steel/

4140 Chemical Composition

AISI 4140 C Mn Si P S Cr Mo
0.38-0.43 0.75-1.00 0.15-0.35 0.035 max 0.040 0.80-1.10 0.15-0.25

4140 Relevant Specifications and Equivalents

ASTM A29 Material No. DIN BS EN 10083 JIS G4105 BS 970-3-1991 BS 970-1955 AS 1444 AFNOR
4140 1.7225 38HM 42CrMo4 SCM440 708M40 EN19A 4140 42CD4
4140 Pre-Hard STEEL PLATE Application 

4140 steel can be used for a wide variety of applications where better wear resistance and toughness is needed over normal carbon steels.

Common uses of 4140 steel plate:

tooling, machine plates, gears, shafts, sprockets, special machine parts, molds, metal stamping, tool & die, shredders, couplings, reamer bodies, screws, flywheel components, axles, shafts, bolts, sprockets, piston rods and rams. diamond cutter Construction

0 0 Continue Reading →

By

in

Alloy Steel

Posted

August 16, 2021 at 11:15

Alloy steel SCM440 PLATE stocking, cutting and grinding

Alloy steel SCM440 PLATE stocking, cutting and grinding

SCM440 Steel-JIS G4105 Alloy steel Grade 4140

We hold the stock, not you…

Steel Processing

we offer a range of cutting and grinding services and we find that the majority of our steel grades are supplied as cut pieces.

Whether it’s bandsaw or flame cut, black, bright or ground we can quote and supply our wide range of steel specifications to bespoke sizes and requirements, regardless of whether it’s a one-off or multiple cut pieces.

This saves you buying any material surplus to your requirements.

When enquiring please provide our sales team with full details of the sizes, quantities and specifications required.

Chemical composition of JIS alloy SCM440
JIS C Si Mn Cr Mo P S
SCM440 0.38～0.43 0.15～0.35 0.60～0.85 0.90～1.20 0.15～0.30 ≤0.030 ≤0.030

Application

JIS SCM440 is commonly used in oil and gas sector. 

Typical applications as Connecting rod, Pin seam jacketed conveyor, gears, stem assembly, pump shaft and the tool holder.

0 0 Continue Reading →

By

in

Alloy Steel

Posted

August 12, 2021 at 14:54

20Cr2Ni4 Mould steel Stocklist

20Cr2Ni4 Mould steel Stocklist
RIGHT STOCK
RIGHT PRICE
QUICK DELIVERY
The 20Cr2Ni4 alloy steel has the properties of high strength, toughness and hardness.

20Cr2Ni4  Chemical composition

C(％) 0.17～0.23 Si(％) 0.17～0.37 Mn(％) 0.30～0.60 Cr(％) 1.25～1.65
Ni(％) 3.25～3.65

20Cr2Ni4  Mechanical Properties

The mechanical properties of 20Cr2Ni4 tool steels are outlined in the following table.

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross-section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HB)
155 (≥) 945 (≥) 14 32 31 Solution and Aging, Annealing, Ausaging, Q+T, etc 423
20Cr2Ni4  TEST
In order to study the static mechanical properties and dynamic mechanical properties of 20Cr2Ni4 steel, the static compression experiment and the Hopkinson Pressure Bar test are conducted.
The stress-strain relationship within the scope of 25∼400°C is obtained by experiments, and softening effect of strain rate and strengthening effect of temperature is comprehensively analyzed. The paper has a more comprehensive understanding on mechanical response of 20Cr2Ni4 steel within the scope of 25∼400°C.
Based on the experiment data the parameters in Johnson-Cook constitutive equation of 20Cr2Ni4 have been gotten.
The research results of this paper lay a foundation for the further applications of 20Cr2Ni4 steel.
20Cr2Ni4  Application
It is used in large cross-section carburized parts, such as gears, shafts and components which are required high strength and good toughness.
0 0 Continue Reading →

By

in

Alloy Steel

Posted

August 9, 2021 at 13:55

Engineering Steel 30crnimo8

Engineering Steel 30crnimo8

What is Engineering Steel?-30crnimo8 steel  Alloy Stee

30crnimo8 round bar
IN STOCK
READY FOR SHIPMENT

1.)Engineering Steel Alloying elements

Engineering Steel is a steel that has had small amounts of one or more alloying elements (other than carbon) such as manganese, silicon, nickel, titanium, copper, chromium, and aluminium added.

2. Relevant Specification for 30CrNiMo8 Material

EN 10083-3 BS970
30CrNiMo8 / 1.6580 823M30

3. DIN 30CrNiMo8 Chemical Composition 

GRADE CHEMICAL COMPOSITION
C Si Mn P S Cr Mo Ni
max max max
30CrNiMo8 / 1.6580 0,26 ~ 0,34 0,40 0,50 ~ 0,80 0,025 0,035 1,80 ~ 2,20 0,30 ~ 0,50 1,80 ~ 2,20

2.) Engineering Steel Properties

This produces specific properties that are not found in regular carbon steel.

Engineering Steels are workhorses of industry because of their economical cost, wide availability, ease of processing, and good mechanical properties. Alloy steels are generally more responsive to heat and mechanical treatments than carbon steels.

Engineering steels are essentially wrought steels designed for mechanical and engineering applications.

These require critical and often stringent levels of elasticity, strength, ductility, toughness, and fatigue resistance. In some cases, it may also require resistance to high or low temperatures, corrosive and other aggressive environments.

3) Engineering Steel Application:

Applications of advanced high-strength steels, sometimes called ultra-high strength steels, are finding their way into current production vehicles all over the world because of their unique qualities that allow for lighter weight parts that are as strong or stronger than conventional steel counterparts.

There is a great variety of engineering steel types and shapes. Each is carefully tailored to meet specific user requirements, in terms of properties and performance and in some cases to facilitate the manufacturing and fabrication techniques.

These techniques are then used to make components or parts. The composition, process route and heat treatment parameters are carefully selected to meet the customers’ needs.

4) Engineering Steel 30crnimo8 Applications:

1.Grade 30CrNiMo8 is used for production of heavily loaded parts, shafts and drive axes, steering shafts, crankshafts of engines, screws and elements exposed to temperatures in the power industry.

2. 30CrNiMo8 equal to 1.6580, 30NCD8, 30CND8 alloy steel

3. Alloyed structural steel with medium hardenability designed for heavy duty components, characterized by high elasticity and strength properties reaching over 1560 N/mm2 at small diameters. When softened, the hardness reaches max. 248 HRB.

 

 

0 0 Continue Reading →
ASTM 4140 steel/42CRMO4

By

in

Alloy Steel

Posted

June 16, 2021 at 16:36

4140 Alloy Structural Steel

4140 Alloy Structural Steel

ASTM 4140 Steel is a Alloy Structural Steel. AISI 4140  is a chromium molybdenum alloy steel, widely used in Oil and Gas industry and Large Machinery Strutural. Also used for  components like axles, shafts, bolts, gears and other applications. 4140 Steel Plate China Supplier and factory Otai Special Steel Supply ASTM 4140 steel in Round bar, Plate, Flat bar, Square, Forging Ring and others any shape. And provide cutting, sawing, milled, machining processing.

 

4140 Steel sheet equivalent standards:

ASTM DIN BS JIS GB
4140 1.7225/42CrMo4 42CrMo4 SCM440 42CrMo

 

4140 steel Mechanical Properties:

Tensile strength:655 MPa

Yield strength:415 MPa

Elongation at break (in 50 mm):25.70%

Poisson’s ratio:0.27-0.30

 

 

0 0 Continue Reading →
1.8519 STEEL

By

in

Alloy Steel

Posted

April 7, 2021 at 17:32

1.8519

1.8519 Steel (1.8519 material) is an alloyed, tempered nitrided steel and is characterized by high wear resistance with its low-ferrite tempered structure. The small amount of alloy of the elements molybdenum and vanadium improves the tempering resistance and reduces the sensitivity to temper embrittlement.

Below please check 1.8519 datasheet:

1.8519 material equivalent standards:

Material No. DIN EN AISI Ravne
1.8519 – 31CrMoV9 – PO735

 

1.8519 mechanical properties:

Tensile strength： Rm 900 – 1100 N / mm2
Brinell hardness： 284 – 346 HB
Yield strength： Rp0.2> 700 N / mm²
strain： > 11%

Constriction of fracture：> 45%

0 0 Continue Reading →
1.6587 STEEL

By

in

Alloy Steel

Posted

March 25, 2021 at 17:58

1.6587 Alloy steel

1.6587 Alloy steel

EN 1.6587 steel is an alloy steel formulated for primary forming into wrought products. 1.6587 is the EN numeric designation for this material. 18CrNiMo7-6 is the EN chemical designation.

It has a moderately high density among EN wrought alloy steels. In addition, it has a fairly high base cost and a moderately high electrical conductivity.

1.6587 steel mechanical properties:

  • Tensile strength:650 – 880MPA
  • Yield strength:350-550MPA
  • Fatigue:275 – 275MPA
  • Elongation:8 – 25%

1.6587 Steel equivalent standards:

EN DIN,WNr AFNOR BS UNI GB SFS ISO
18CrNiMo7-6/1.6587 17CrNiMo6 18NCD6 820A16 18NiCrMo7 17Cr2Ni2Mo 511 18CrNiMo7

0 0 Continue Reading →
1.6580 steel

By

in

Alloy Steel

Posted

March 23, 2021 at 17:53

1.6580 alloy steel

1.6580 alloy steel

1.6580 steel is alloy structural steel with medium hardenability designed for heavy duty components, characterized by high elasticity. When softened, the hardness could reaches 248 HRB. It is also characterized by its resistance to variable loads and impacts. 1.6580 material is not suitable for welding and ultimately requires additional preheating.

 

1.6580 Steel equivalent standards:

EN EN AISI/ASTM PN ISO
1.6580 30CrNiMo8 4340 30H2N2M 31CrNiMo8

 

1.6580 steel mechanical properties:

Tensile strength, Rm >800 N/mm2

Yield strength, Re: >590 N/mm2

Elongation, A: >12%

Impact strength, KV: >40 J

0 0 Continue Reading →
1.6510 steel

By

in

Alloy Steel

Posted

March 22, 2021 at 17:46

1.6510 Alloy Steel

1.6510 Alloy Steel

1.6510 Steel is  a steel  with high hardening capacity and good toughness, which allows to achieve optimum mechanical properties with dimensions up to approx. 80mm.

1.6510 Steel equivalent standards:

DIN EN ANFOR AISI/ASTM GOST
1.6510 39NiCrMo3 40NCD3 9840 39HNM

 

1.6510 Steel equivalent standards:

Yield point:< 740 MPa

Tensile strength:> 880 MPa

Elongation:> 12 %

Density:~7,85 kg/dm3

 

0 0 Continue Reading →

By

in

Alloy Steel

Posted

March 19, 2021 at 14:11

1.5752 Alloy steel

1.5752 Alloy steel

1.5752 belongs to alloy steel, otai manufacture 1.5217 alloy steel. 1.5217 supplier.

1.5752 steel mechanical properties:

Tensile strength: 650 – 880MPa

Yield strength:350 – 550MPa

Elongation:8 – 25%

Fatigue:275 – 275MPa

1.5752 Steel equivalent standards:

DIN EN ANFOR BS GOST AISI AMS UNI
1.5752 15NiCr13 14NC11 655H13 G55M13 3415 6260E 18NC13
0 0 Continue Reading →
1234→ »