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Special Steel

4145H 120 KSI as per API standard

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4145H 120 KSI as per API standard
4145H 120 KSI as per API standard
4145H 120 KSI as per API standard
4145H 120 KSI as per API standard
4145H 120 KSI as per API standard
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Description

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AISI 4145H 120 KSI Alloy Steel Bar for Drilling Collar, Drill Pipe, Square Kelly, Lifting Sub, Stabilizer
 
Chemical Composition (%)

C

Si

Mn

P

S

Cr

Mo

Ni

Cu

0.42
0.49

0.15
0.35

0.80
1.15

≤
0.020

≤
0.025

0.75
1.20

0.15
0.45

≤
0.25

≤
0.30
 
Dimensions

 

Hot Rolled

Forged

Diameter (mm)

50-130

100-1300

Length (mm)

4000-10000

3000-10000
 
Delivery Condition
EAF+LF+VD, Hot Rolled or Forged, Machined, Q+T, UT 100% Passed
 
Mechanical Properties

 

Tensile Strength
PSI (MPa)

Yield Strength
PSI (MPa)

Elongation

Reduction
of
Area

Hardness

Min.

140000

120000

14%

45%

30 HRC
(285 HB)

Max.

------

------

------

------

36 HRC
(341 HB)
 
Characteristics
AISI / SAE 4145H grade is a low-alloy steel containing chromium and molybdenum as strengthening agents. The steel has good fatigue strength and impact toughness in low temperature, weldability and machinability. 
 
Applications
This low-alloy steel is used in heat treated condition with 120 KSI minimum yield strength for oil and gas equipments of well drilling, wellhead, Christmas tree, etc.
 
What we can offer?
 
We offer a wide range of steel products in a wide variety of dimensions and executions, acc.to the common international specifications or customerized.
Machining and heat treatment are available.
Also, we advise you in choosing the right materials.
 
Shape Available
Solid round bar
Flat bar
Square bar
Hexagon bar
Block
Plate
Sheet
Wire rod
Strip

 

AISI

DIN

JIS

Stock

Application

Hot Work Tool Steel

H11

1.2343

SKD6

√

Die Casting Dies,Extrusion Dies, Hammer Dies,
Ram Dies,
Forging Dies
etc.

H13

1.2344

SKD61

√

H10

1.2365

SKD7

　

——

1.2367

——

　

L6

1.2714 / 1.2713

SKT4

√

H12

1.2606

SKD62

　

H21

1.2581

SKD5

√

Cold Work Tool Steel

D3

1.2080

SKD1

√

Cutting Tools, Punching Tools, Shear Bladers, Reamers, Thread Rolling Dies, Calipers, Sockets etc.

——

1.2601

~SKD11

√

D2

1.2379

~SKD11

√

——

1.2379 MOD

DC53 (Daido)

√

D6

1.2436

——

　

O1

1.2510

SKS3

√

O2

1.2842

——

　

A2

1.2363

SKD12

　

S1

1.2550

——

　

S7

1.2357

——

　

——

1.2767

SKT6

　

L2

1.2210

——

　

Plastic
Mould Steel

P20

1.2311

——

√

      Mold Base,           Core & Cavity,         Bumper Mold             etc.         

P20+Ni

1.2738

——

√

P20+S

1.2312

——

√

——

1.2316

——

　

420

1.2083

SUS420J2

√

——

——

NAK80 (Daido)

√

Alloy Steel

4120

25CrMo4 / 1.7218

SCM420

　

Shafts, Gears, Drillers, Chains, Bolts, Nuts, Pins, Suds, Keys, Bites, Crankshafts, Connecting Rods, Came, Couplings  etc.

4135

34CrMo4 / 1.7220

SCM435

　

4130

34CrMo4 / 1.7220

SCM430

√

4140

   42CrMo4 /        42CrMoS4 /                1.7225             

SCM440

√

4142

41CrMo4 / 1.7223

SCM440

　

4145H

——

——

　

4330V

——

——

　

4340

34CrNiMo6 / 1.6582

SNCM439

　

5115

16MnCr5 / 16MnCrS5 / 1.7131

　

　

5120

20MnCr5 / 20MnCrS5 / 1.7147

SMnC420H

　

5140

41Cr4 / 41CrS4 / 1.7035

SCr440

√

8620

21NiCrMo2 / 1.6523

SNCM220

　

8640

40NiCrMo2-2 / 1.6546

SNCM240

　

——

18CrNiMo7-6 / 17CrNiMo6 / 1.6587

——

　

9840

36CrNiMo4 / 1.6511

——

　

E71400

41CrAlMo7-10 / 1.8509

SACM1

　

——

34CrAlNi7 / 1.8550

——

　

Bearing Steel

E52100

100Cr6 / 1.3505

SUJ2

√

Bearing, Shafts
etc.

——

100CrMn6 / 1.3520

——

　

——

100CrMo7-3 / 1.3536

——

　

Spring Steel

5155

55Cr3 / 1.7176

SUP9

　

Springs

6150

51CrV4 / 1.8159

SUP10

　

9261

60CrSi7 / 1.7108

——

　

Carbon Steel

1010

CK10 / C10E / 1.1121

S10C

　

Shafts, Chains, Bolts, Nuts, Pins, Suds, Keys, Bites, Came, Couplings  etc.

1020

C22 / 1.0402

S20C

√

1040

CK40 / C40E / 1.1186

S40C

√

1045

CK45 / C45E / 1.1191

S45C

√

1050

CK50 / C50E / 1.1206

S50C

√

1055

CK55 / C55E / 1.1203

S55C

　

1064

CK60 / C60E / 1.1221

S58C

　

High Speed Tool Steel

M2

1.3343

SKH51

√

Reamer,
      End-mill,         
Hob, Cutter, Bite, Drill, Punch, Tap, Brooch
etc.

M7

1.3348

——

　

M42

1.3247

SKH59

√

M35

1.3243

SKH55

√

T1

1.3355

SKH2

　

T15

1.3202

——

　

T42

1.3207

SKH57

　
 
Note:
1). √ means we have stoc
2). Delivery Condition:
Smelting: EAF+LF+VD (+ESR)
Making: Hot rolled, Cold rolled, Forged, Cold Drawn
Heat Treatment: Untreated, Annealing, N+T, Q+T
Surface: Black, Peeled, Turned, Milled, Grinded, Polished
 
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