Hardening and Hardness Test Methods Standard Material Sizes 1

Q Heat Treatment for Steel Materials Q Hardness Test Methods and Applicable Parts Q General Steel Materials Name Vickers Hardness (HV) Hardening Depth...

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[Materials]

[Materials]

Hardening and Hardness Test Methods

Standard Material Sizes 1

Q Heat Treatment for Steel Materials Name

Through hardening

Carburization

Vickers Hardness Hardening Depth (HV) (mm)

750 or Less

500 or Less

Induction Hardening 750 or Less

Nitriding

TUFFTRIDE is the trademark of Durferrit GmbH‚ Germany (salt bath process).

Q General Steel Materials

900~1000

Carbon Steel 500 Stainless Steel 1000

Bluing



Full Depth

Standard 0.5

Up to 2

Strain

Applicable Materials Typical Material

Varies according High Carbon Steel to materials. C>0.45%

Moderate

1~2

0.1~0.2

0.01~0.02

Low

Steel Material



Wire Rod

·A surface hardening method that forms hardening layer of hard nitride compounds on the steel surface ·Obtains highest degree of hardness among all hardening techniques. ·Fit for mass production. ·Applicable to spindles for sliding bearing.

Brinell Hardness

Rockwell Hardness

Shore Hardness

Vickers Hardness

3563

Principle ·A (steel or super hard alloy) ball indenter is used to indent the test surface. Hardness is given as a quotient divided by the surface area of the dent, computed from the diameter. ·This standard or test load is applied via a diamond or ball indenter. Hardness is read on a tester.

·The specimen is set on a table. A hammer is dropped from a uniform height. Hardness is based on how height the hammer bounces.

1018 Carbon Steel

JIS-SWP-B

Applicable Heat-Treated Parts

Square Bar

_

9,13,16,19,22,25,32,38,44,50,65,75,90,100

t

Width W

2

6,8,10,12,16,20

3

6,8,9,10,12,13,16,19,22,25,32,38,50

4

10,13,16,19,20,22,25,32

JIS SS400D

·Annealing ·Normalized parts ·Anchored materials

·Hardening tempered parts ·Carburized surfaces ·Nitrided parts ·Thin sheets such as copper, brass, bronze, etc. ·Hardening tempered parts ·Nitrided parts ·Large carburized parts, etc.

·Uses a diamond 136˚square pyramid ·This hardening layers by indenter. Hardness value is obtained induction hardening, carburizing, from the surface area of the dent, nitriding, electrolytic plating, computed from the experimental load ceramic coating, etc. and the length of the diagonal lines ·Hardening layer depth of the dent.(Automatically calculated) in carburized and nitrided parts.

Square Bar

·Applicable to uneven materials and forged products because indent is large. ·Not applicable to small or thin specimens. ·Hardness value obtained quickly. ·Applicable to intermediate testing of actual products. ·Caution is required as there are 30 types.

Reference

JIS Z2243

·Applicable to small and thin specimens. ·Applicable to all materials because of diamond indenter.

JIS Z2244

8,10,13,16,19,20,22,25,30,32,38,50

6

9,10,13,16,19,20,22,25,32,38,44,50,60,65,75,90,100,125

8

10,12,13,16,19,22,25,30,32,38

9

12,13,16,19,22,25,32,38,44,50,60,65,75,90,100,125

10

13,15,16,20,22,25,30,32,38,40,50,60,65,100

12

16,19,22,32,38,44,45,50,60,65,75,90,100,125

16

19,22,25,32,38,44,50,60,65,75,90,100,125

19

22,25,32,38,44,50,60,65,75,90,100,125

22

25,32,38,44,50,60,65,75,90,100,125

25

32,38,44,50,60,65,75,90,100,125

30

50,65,75,100,125

32

50,65,75,100,125

38

50,65,75,100,125

_

2.5,3,4,4.5,5,5.5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,24,25,28,30,32,34,35, 36,38,40,42,44,45,50,55,60,65,70,75,80,85,90,100,110,120,130

Round Bar

D

2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32, 33,34,35,36,37,38,40,42,43,44,45,46,48,50,55,60,65,70,75,80,85,90,95,100,105,110, 115,120,130,140,150,160,170,180,190,200

Cold-Rolled Steel Plate

Low Carbon Steel

Steel Plate

t

0.4,0.5,0.6,0.7,0.8,1,1.2,1.6,2,2.3,3.2

Hot-rolled Steel Plate

Low Carbon Steel

Steel Plate

t

(1.2),1.6,2.3,2.6,3.2,4.5

1045 Carbon Steel (Polished) Round Bar

D

2,2.5,3,3.5,4,4.5,6,7,8,9,9.5,10,11,12,13,14,15,16,17,18,19,20, 21,22,23,24,25,26,27,28,29,30,32,33,34,35,36,38,40,42,44,45,46, 48,50,55,60,65,70,75,80,85,90,95,100,105,110,115,120,125,130

Flat Bar

t

6,9.5,12.7,13,16,19,22,25,27,32,38,45,50,55,65,75,85,95, 105,115,125,135,145,155,(165),(175),(185),(205)

JIS-SKS93

Square Bar Flat Bar

_ t

12.7,13,16,19,25,28,32,38,44,50,55,65,75,90,100,110,120,130,155 2,3,4,5,6,7,8,9,10,12,13,16,19,22,25,27,32,38,43,50,53,65,75,90,105,130,155

Carbon Tool Steel

JIS-SKS93

Square Bar

_

10,13,16,19,22,25,28,32,38,45,50,55,65,75,90,105,130,(155),(210)

W1-9 Tool Steel Round Bar -DG8

D

2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,22,23,24, 25,26,28,30,32,36,38,40,42,45,48,50,55,60,65,70,75,80

Alloy Tool Steel

01 Tool Steel

Carbon Steel for Machine Structural Use

JIS Z2245

·Extremely easy to operate and data can be obtained quickly. ·Applicable to large parts. JIS Z2246 ·Indent is kept shallow, therefore is applicable to actual products. ·Portable, as being compact and light weight.

11,13,16,19,22,25,32,38,50

5

3,5,6,7,8,9,10,11,12,13,14,17,19,21,22,23,24,26,27,29,30,32,35,36, Hexagonal Bar Opposite side H 38,41,46,50,54,55,58,60,63,65,67,70,71,75,77,80,85,90,95,100,115

·Low temperature annealing. ·Removes internal stress during forming to enhance elasticity.

Features

6,9,12,13,14,16,19,22,25,28,30,32,35,38,40,45,50,55,60,65, 70,75,80,85,90,95,100,105

t

Flat and Square Steel Bar Polished Steel Bar (Cold-Drawn)

Standard Dimensions

Flat Bar

4.5

·Tufftride is one of the nitriding methods called 1045 Carbon Steel soft-nitriding (salt bath process). ·High fatigue resistance and abrasion resistance SCM415 Alloy Steel ·Same corrosion resistance as zinc plating. W1-10 Tool Steel ·Not applicable to precision parts because of Stainless Steel incapability of polishing after heat treatment. ·Applicable to oil free bearings.

Q Hardness Test Methods and Applicable Parts Testing Method

Rolled Steel for General Structure

·A surface hardening method that uses high frequency induction current to quickly heat and cool the steel surface. 1045 Carbon Steel ·Applicable to partial hardening ·Expensive in small-volume lots. ·High fatigue resistance.

Nitriding Steel JIS-SCM645

Low



01 Tool Steel ·Operation of heating copper to an appropriate JIS-SKS21 temperature over transformation point and quickly 52100 Bearing Steel cooling it in an appropriate medium in order to M2 Tool Steel increase hardness or improve strength. JIS-SKS93 ·Not applicable to long or precision parts, such as W1-9 Tool Steel 1045 Carbon Steel spindles, etc.

Material Code Shapes Unit

·Applicable to partial hardening Low Carbon Steel SCM415 Alloy Steel ·Hardening depth should be specified on drawings. JIS-SNCM220 C<0.3% ·Applicable to precision parts.

Medium Carbon Steel C 0.3~0.5%

High

Type

Reference

1049 Carbon Steel

Flat Bar

t

2,3,4,5,6,7,8,9,10,12,13,16,19,22,25,27,32,38,43,50,53,65,75,90,105,130,155,(160)

Square Bar

_

10,13,16,19,22,25,28,32,36,38,45,50,55,65,75,90,105,130,(155),(210)

Round Bar

D

13,16,19,22,25,28,32,38,42,46,50,55,60,65,70,80,85,90,100,110,120,130,150,160,180

Hexagonal Bar Opposite side H 6,7,8,9,10,11,12,13,14,17,19,21,22,23,24,26,27,30,32,35,36,38,41,46,50,54,55

Chrome Molybdenum Steel 4137 Alloy Steel Round Bar

D

4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24, 25,26,27,28,30,32,34,35,36,38,40,42,45,46,48,50

Sulfuric and Sulfur 12L14 Carbon Compound Free Cutting Steel Steel

Round Bar

D

3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,20,22,23,24,25,26,28,30,32,34,35,36,38,40

High Carbon Chrome Bearing Steel

Round Bar

D

13,16,19,22,25,28,(30),32,(34),36,38,42,(44),46,(48),50,55,60,65,70,75,80,85,90,95, 100,110,120,130,140,150,(160),(170),(180),(190),(200),(210),(220),(230),(240),(250)

52100 Bearing Steel

3564

[Materials]

[Materials Data]

Standard Material Sizes 2

Comparisons of Materials between JIS and Foreign Standards 1

Q Stainless Steel Materials Type Austenite

303 Stainless Steel Round Bar Flat Bar Square Bar

Austenite

Q Carbon Steel for Machine Structural Use, Alloy Steel

Material Code Shapes Unit

304 Stainless Steel

Standard Dimensions

D

3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,25,26,28,30

t

3,4,5,6,8,9,10,12,14,15,16,19,20,22,25,28,30,35,40,45,50,55,60,70

_

5,6,7,8,9,10,12,13,14,15,16,19,20,22,25,28,30,32,36,38,40,45,50,60

Japan Industrial Standards Standard Number Name JIS G 4051 Carbon Steel for Machine Structural Use

Round Bar

D

Steel Plate

t

0.3,0.4,0.5,0.6,0.8,1,1.2,1.5,2,2.5,3,4,5,6,7,8,9,10,12,15,20

Type Brass Plate

C28000 Brass

Steel Plate Square Bar

Free-Cutting Brass C3604 BD Brass (Extruded Bar) (JIS)

C10

1010

− C15E4 C15M2 −

1012

040A10 045A10 045M10 040A12

1015

055M15

1017

− 070M20 C22 C22E C22R − C25 C25E C25R −

S20C S22C S25C S28C S30C

Material Code Shapes Unit t _

Standard Dimensions

S35C

3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,28,30,32,35,36,38, 40,42,45,50,55,60,65,70,75,80,85,90,95,100

S40C

5,5.5,6,7,8,9.5,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,32,34, 35,36,38,40,41,42,44,45,46,50,54,55,58,60,65,70,75,80

Round Bar

3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,32,33, 34,35,36,38,40,42,45,46,47,48,50,51,52,53,54,55,56,57,58,60,65,70,75,80,85,90,95, 100,105,110,115,120,125,130,135,140,145,150,160,170,180,190,200,210,220,230,240, 250,270,280,300,320,350

D

S33C

0.1,0.15,0.2,0.3,0.4,0.5,0.8,1,1.2,1.5,1.6,2,2.3,2.5,3,3.5,4, 5,6,7,8,9,10,12,15,20,25,30,40,50

Hexagonal Bar Opposite side H

S38C

S43C S45C S48C S50C S53C S55C

Q Aluminum Alloy Materials Type

Flat Bar Al-Cu Alloy

Al-Mg Alloy

S58C

Material Code Shapes Unit

2017 Aluminum Alloy Round Bar

5052 Aluminum Alloy

Flat Bar

t D

Standard Dimensions 0.5,0.6,0.8,1,1.2,1.5,1.6,2,2.5,3,4,5,6,8,10,12,15,20,25,30,40,45,50,60,70,80,90,100 5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33, 34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60, 61,62,63,64,65,70,75,80,85,90,95,100,105,110,115,120,125,130,135,140,150,160,170, 180,190,200,210,220,230,240,250,260,280,300

t

0.4,0.5,0.6,0.7,0.8,1,1.2,1.5,1.6,2,3,3.2,4,5,6,7,8,10,12,15,16,18,20,22,25,30,35,40,45, 50,55,60,65,70,75,80,85,90,95,100,105,110,120,130,150,160,170,180,200

Al-Mg Alloy

5056 Aluminum Round Bar Alloy

D

5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36, 37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,70, 75,80,85,90,95,100,105,110,115,120,125,130,135,140,150,160,170,180,190,200,210,220,230, 240,250,260,270,280,290,300,310,320,330,340,350,360,370,380,390,400,420

Al-Mg-Si Alloy

6063 Aluminum Alloy Square Bar

_

6,8,10,12,14,15,16,18,19,20,22,25,30,32,35,40,45,50,60,70,80,100

Material Code Shapes Unit

Laminated Sheet

Bakelite

Polyamide Resin

Nylon 6, 66

(MC Nylon)

MC Nylon

3565

Polyacetal

General Methacrylic Resin Plate

Acrylic

1035 1038 1039 1040 1042 1043 1045 1046 − 1049 1050 1053 1055 1059 1060 − − − 1522







XC18



C22 C22E C22R

C22 C22E C22R



− C25 C25E C25R −

− C25 C25E C25R −

C30 C30E C30R

C30 C30E C30R

− C35 C35E C35R −

− C35 C35E C35R −

C40 C40E C40R

C40 C40E C40R

080A42





C45 C45E C45R 080A47 080M50 C50 C50E C50R

C45 C45E C45R −

C45 C45E C45R −

− 070M55 C55 C55E C55R C60 C60E C60R 045A10 045M10 − − 150M19

C50 C50E C50R

C50 C50E C50R

1541 − −



− −

− −

2 2 2 2 2 2

41CrAIMo74











JIS G 4052 Structural Steel with Guaranteed Hardenability (H Steel)

22Mn6 − 36Mn6 42Mn6 − −

1522H − 1541H 1541H − −

− − − − − −

− − − − − −

− − − − − −





− − − − − − 17Cr3 17CrS3



15X

5120H







20X

SCr435H

t

5,7,10,12,15,20,25,30,35,40,45,50,60,70,80,90,100,110,120

SCM420H

D

20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,95,100,110,120,130,140,150,160,170, 180,190,200,225,250,275,300,325,350,375,400,450,500,600

SCM440H

SCr440H SCM415H SCM418H SCM435H



34Cr4 34CrS4 37Cr4 37CrS4 37Cr4 37CrS4 41Cr4 41CrS4 − 18CrMo4 18CrMoS4 − 34CrMo4 34CrMoS4 42CrMo4 42CrMoS4

SCM445H



SCM822H SNC415H SNC631H SNC815H

− − − 15NiCr13

SNCM220H

20NiCrMo2 20NiCrMoS2

SNCM420H



5130H 5132H

34Cr4 34CrS4

34Cr4 34CrS4

34Cr4 34CrS4

30X

5135H

37Cr4 37CrS4

37Cr4 37CrS4

37Cr4 37CrS4

35X

5140H

41Cr4 41CrS4

41Cr4 41CrS4

41Cr4 41CrS4

40X

− 18CrMo4 18CrMoS4 − 34CrMo4 34CrMoS4 42CrMo4 42CrMoS4

















− 4135H 4137H 4140H 4142H 4145H 4147H − − − − 8617H 8620H 8622H 4320H

708H20 34CrMo4 34CrMoS4 42CrMo4 42CrMoS4 − − − − 655H13 805H17 805H20 805H22 −

− − − − 15NiCr13

− 34CrMo4 34CrMoS4 42CrMo4 42CrMoS4

SCr445 SCM415 SCM418 SCM420 SCM421

SCM445

SMn420H SMn433H SMn438H SMn443H SMnC420H SMnC443H

20Cr4 20CrS4 34Cr4 34CrS4

20Cr4 20CrS4 34Cr4 34CrS4

SCM440

SACM645

SCr420H



SCr420

SCM435

JIS G 4202 Aluminum Chrome Molybdenum Steel

SCr415H

SCr415

SCM430

60

− − − 30 35 35 40 40 45 − −



SNCM240

41CrNiMo2 41CrNiMoS2 − − − − − − − − −

SCM432



− −

JIS G 4105 Chrome Molybdenum Steel

50

XC12 XC18 −



20NiCrMo2 20NiCrMoS2

SCr440

45

XC10



− −

40 45

JIS G 4107 High-Temperature Alloy Steel for Bolts JIS G 4108 Steel Bar for Special-Purpose Alloy Bolts

ISO 683/1,10,115) − − − 15NiCr13 −

SNCM220

SCr435

40

C15E − −



SNC236 SNC415 SNC631 SNC815 SNC836

SCr430

35

C10E



42Mn6

35



C60 C60E C60R

JIS G 4104 Chrome Steel

30

50



SMnC420 SMnC443

30



150M36

SMn443



C55 C55E C55R

Symbol

SNCM415 SNCM420 SNCM431 SNCM439 SNCM447 SNCM616 SNCM625 SNCM630 SNCM815

25



C60 C60E C60R

JIS G 4103 Nickel Chrome Molybdenum Steel



C55 C55E C55R

150M36

Plate

0.8,1,1.5,2,3,4,5,6,8,10,15,20,25,30

C60 C60E4 C60M2



080A30 080M30 C30 C30E C30R − C35 C35E C35R − 080M40 C40 C40E C40R



XC12

1534

6,8,10,15,20,25,30,35,40,45,50,55,60,65,70,75,80,90,100,120,140,160,180,200

t

− C55 C55E4 C55M2

1030

JIS G 4102 Nickel-Chromium Steel

XC10

1541

D

Plate

C50 C50E4 C50M2

1029

Standard Number Name

− C15E C15R −



Bar

D

− C45 C45E4 C45M2 −

1025

OCT 4543

C10E C10R

36Mn6

5,10,15,20,25,30,40,50

Bar

C40 C40E4 C40M2

1023

NF A35-551 NF EN 10083−1,2

SMn438

t

4,5,6,7,8,9,10,12,12.5,13,15,16,17.5,20,22.5,25,30,35,40,45,50,55,60,65,70,75,80,85, 90,100,110,120,(130),(140),150,(160),(180),200

C35 C35E4 C35M2 −

1020

DIN EN 10084 DIN EN 10083−1,2

SMn433

Plate

5,6,8,10,12,15,20,25,30,35,40,50,60,70,80,90,100



− − 22Mn6

(0.5),(0.6),0.8,1,1.2,1.5,1.6,2,2.5,3,4,5,6,8,10,12,15,16,20,25,30,35,40,50   Sizes in( )for cloth base only.

t

C30 C30E4 C30M2



t

Bar

− C25 C25E4 C25M2 −

S15CK S20CK SMn420

Plate

Plate Acetal Resin

Standard Dimensions



S09CK

SCr430H

Q Resin Type Materials Type

JIS G 4106 Manganese Steel and Chrome-Manganese Steel for Machine Structural Use

BS 970 Part1,3 BS EN 10083−1,2

S12C S17C

Q Copper Alloy Materials

AISI SAE

Steel Type Related to Foreign Standards

Japan Industrial Standards

Steel Type Related to Foreign Standards ISO 683/1,10,115)

S10C

S15C

Hexagonal Bar Opposite side H 8,10,14,17,19,21,22,23,24,26,29,30,32,35,36,38,41,46 3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,28,30,32,34,35,36, 38,40,42,45,46,48,50,55,60,65,70,75,80,85,90,95,100,110,120,130,140,150,160,170, 180,190,200,210,220,230

Symbol

SCM822 SNB5

34Cr4 34CrS4 37Cr4 37CrS4 37Cr4 37CrS4 41Cr4 41CrS4 − − 18CrMo4 18CrMoS4 − − − − 34CrMo4 34CrMoS4 42CrMo4 42CrMoS4 − − −

SNB7

42CrMo4 42CrMoS4

SMB16 SNB21−1~5

− − 42CrMo4 42CrMoS4 − −

SNB22−1~5 SNB23−1~5 SNB24−1~5

AISI SAE − − − − − 8615 8617 8620 8622 8637 8640 − 4320 − 4340 − − − − −

BS 970 Part1,3 BS EN 10083−1,2









− − − − − − − − −

− − − − − − − − −

− − − − − − − − −





17Cr3 17CrS3



− 20XH2M(20XHM) − − − − − − − 15X 15XA

5120



− − − 655M13 − 805A20 805M20 805A22 805M22

DIN EN 10084 DIN EN 10083−1,2 − − − 15NiCr13 − 20NiCrMo2 20NiCrMoS2

20NCD2

OCT 4543 40XH − 30XH3A − − −



20X

5130 5132

34Cr4 34CrS4

34Cr4 34CrS4

34Cr4 34CrS4

30X

5132

37Cr4 37CrS4

37Cr4 37CrS4

37Cr4 37CrS4

35X

5140

530M40 41Cr4 41CrS4

41Cr4 41CrS4

41Cr4 41CrS4

40X

− −

− −





− −

708M20 −

4131





− 34CrMo4 34CrMoS4 708M40 709M40 42CrMo4 42CrMoS4

4137 4140 4142



NF A35−551 NF EN 10083−1,2 − − − − −

− − 18CrMo4 18CrMoS4 − − −

− −

45X −



20XM

− −

20XM − 30XM 30XMA −



− 34CrMo4 34CrMoS4

− 34CrMo4 34CrMoS4

42CrMo4 42CrMoS4

42CrMo4 42CrMoS4

35XM −

4145 4147 − 501 4140 4142 4145 − −









− − 708M40 709M40 42CrMo41) 40CrMoV4−61) 40CrMoV4−61)

− −

− −

− −

42CrMo42)

42CrMo44)



40CrMoV473) 40CrMoV473)

40CrMoV4−64) 40CrMoV4−64)

− −

4142H



42CrMo4





E4340H 4340

− −

− −

− −

2)

− −

Cautions 1) BS EN 10259 2) DIN 1654 Part 4 3) DIN 17240 4) NF EN 10259 5) ISO683-1, 10 and 11 have been translated into JIS as JIS G 7501, G 7502 and G 7503. ISO:International Organization for Standardization AISI:American Iron and Steel Institute SAE:Society of Automotive Engineers BS:British Standards DIN:Deutsches Institut für Nörmung EN:European Standards NF:Norme Francaise OCT:National Standards of Former USSR

Names of Tool Steels

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20NCD2









Rolled Steel for General Structure Carbon Steel for Mechanical Structure Chrome Molybdenum Steel Nickel Chrome Molybdenum Steel Carbon Tool Steel Alloy Tool Steel Alloy Tool Steel High-Speed Tool Steel High Carbon Chrome Bearing Steel Stainless Steel Gray Cast Iron

SS400·············· Steel, Structure, 400N/mm2 S45C················ Steel, 0.45%C SCM435··········· Steel, Cr, Mo 435 SNCM220········· Steel, Ni, Cr, Mo 220 SK105·············· Steel, Tool(Kogu, in Japanese), Type105 (Old SK3) SKS3················ Steel, Tool(Kogu, in Japanese), Special, Type 3 SKD11·············· Steel, Tool(Kogu, in Japanese), Dies, Type 11 SKH51·············· Steel, Tool(Kogu, in Japanese), High Speed, Type 51 SUJ2················· Steel, Use, Bearing, Type 2 SUS304············ Steel, Use, Stainless, Type 304 FC250··············· Ferrum(  Iron ), Cast, 250N/mm2

3566