[Materials] [Materials]

Hardening and Hardness Test Methods Standard Material Sizes 1

Q Heat Treatment for Steel Materials Q General Steel Materials

Vickers Hardness Hardening Depth Type Material Code Shapes Unit Standard Dimensions
Name Strain Applicable Materials Typical Material Reference
(HV) (mm)
6,9,12,13,14,16,19,22,25,28,30,32,35,38,40,45,50,55,60,65,
01 Tool Steel Rolled Steel for 1018 Carbon Flat Bar t 70,75,80,85,90,95,100,105
·Operation of heating copper to an appropriate
JIS-SKS21 General Structure Steel
temperature over transformation point and quickly Square Bar _ 9,13,16,19,22,25,32,38,44,50,65,75,90,100
Varies according High Carbon Steel 52100 Bearing Steel
cooling it in an appropriate medium in order to
Through hardening 750 or Less Full Depth M2 Tool Steel t Width W
to materials. C>0.45% JIS-SKS93 increase hardness or improve strength.
W1-9 Tool Steel ·Not applicable to long or precision parts, such as 2 6,8,10,12,16,20
1045 Carbon Steel spindles, etc. 3 6,8,9,10,12,13,16,19,22,25,32,38,50
4 10,13,16,19,20,22,25,32
Standard 0.5 ·Applicable to partial hardening 4.5 11,13,16,19,22,25,32,38,50
Low Carbon Steel SCM415 Alloy Steel
Carburization 500 or Less Moderate ·Hardening depth should be specified on drawings.
Up to 2 C<0.3% JIS-SNCM220
·Applicable to precision parts.
5 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
·A surface hardening method that uses high frequency
Medium induction current to quickly heat and cool the steel surface. Flat and 9 12,13,16,19,22,25,32,38,44,50,60,65,75,90,100,125
Square
Induction Hardening 750 or Less 1~2 High Carbon Steel 1045 Carbon Steel ·Applicable to partial hardening Steel Bar 10 13,15,16,20,22,25,30,32,38,40,50,60,65,100
C 0.3~0.5% ·Expensive in small-volume lots.
12 16,19,22,32,38,44,45,50,60,65,75,90,100,125
·High fatigue resistance.
Polished Steel Bar 16 19,22,25,32,38,44,50,60,65,75,90,100,125
·A surface hardening method that forms hardening (Cold-Drawn) JIS SS400D
19 22,25,32,38,44,50,60,65,75,90,100,125
layer of hard nitride compounds on the steel surface
Nitriding 900~1000 0.1~0.2 Low Nitriding Steel JIS-SCM645 ·Obtains highest degree of hardness among all hardening techniques. 22 25,32,38,44,50,60,65,75,90,100,125
·Fit for mass production. 25 32,38,44,50,60,65,75,90,100,125
·Applicable to spindles for sliding bearing.
30 50,65,75,100,125
·Tufftride is one of the nitriding methods called 32 50,65,75,100,125
TUFFTRIDE is
1045 Carbon Steel soft-nitriding (salt bath process). 38 50,65,75,100,125
the trademark of ·High fatigue resistance and abrasion resistance
Carbon Steel 500 SCM415 Alloy Steel
Durferrit GmbH‚ 0.01~0.02 Low Steel Material ·Same corrosion resistance as zinc plating. 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,
Stainless Steel 1000 W1-10 Tool Steel ·Not applicable to precision parts because of Square Bar _
Germany (salt 36,38,40,42,44,45,50,55,60,65,70,75,80,85,90,100,110,120,130
Stainless Steel incapability of polishing after heat treatment.
bath process).
·Applicable to oil free bearings. 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.

Bluing − − − Wire Rod JIS-SWP-B
·Removes internal stress during forming to enhance elasticity.
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,
Round Bar D 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 Low Carbon Steel Plate t 0.4,0.5,0.6,0.7,0.8,1,1.2,1.6,2,2.3,3.2

Q Hardness Test Methods and Applicable Parts Steel Plate Steel

Testing Method Principle Applicable Heat-Treated Parts Features Reference Hot-rolled Low Carbon
Steel Plate Steel Steel Plate t (1.2),1.6,2.3,2.6,3.2,4.5
·A (steel or super hard alloy) ball ·Annealing ·Applicable to uneven materials
indenter is used to indent the test ·Normalized parts and forged products because 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,
1045 Carbon
Brinell Hardness surface. Hardness is given as a ·Anchored materials indent is large. JIS Z2243 Steel (Polished) Round Bar D 21,22,23,24,25,26,27,28,29,30,32,33,34,35,36,38,40,42,44,45,46,
quotient divided by the surface area of ·Not applicable to small or thin 48,50,55,60,65,70,75,80,85,90,95,100,105,110,115,120,125,130
Carbon Steel for
the dent, computed from the diameter. specimens. Machine Structural Use 6,9.5,12.7,13,16,19,22,25,27,32,38,45,50,55,65,75,85,95,
1049 Carbon Flat Bar t 105,115,125,135,145,155,(165),(175),(185),(205)
·This standard or test load is ·Hardening tempered parts ·Hardness value obtained quickly. Steel
Square Bar _ 12.7,13,16,19,25,28,32,38,44,50,55,65,75,90,100,110,120,130,155
applied via a diamond or ball ·Carburized surfaces ·Applicable to intermediate testing
Rockwell Hardness indenter. ·Nitrided parts of actual products. JIS Z2245 JIS-SKS93 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
Hardness is read on a tester. ·Thin sheets such as copper, ·Caution is required as there are
brass, bronze, etc. 30 types. Carbon Tool JIS-SKS93 Square Bar _ 10,13,16,19,22,25,28,32,38,45,50,55,65,75,90,105,130,(155),(210)
Steel
W1-9 Tool Steel 2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,22,23,24,
-DG8 Round Bar D 25,26,28,30,32,36,38,40,42,45,48,50,55,60,65,70,75,80
·The specimen is set on a table. ·Hardening tempered parts ·Extremely easy to operate and
A hammer is dropped from a ·Nitrided parts data can be obtained quickly. 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)
uniform height. Hardness is ·Large carburized parts, etc. ·Applicable to large parts.
Shore Hardness based on how height the hammer ·Indent is kept shallow, therefore JIS Z2246 Alloy Tool Steel 01 Tool Steel Square Bar _ 10,13,16,19,22,25,28,32,36,38,45,50,55,65,75,90,105,130,(155),(210)
bounces. is applicable to actual products. 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
·Portable, as being compact and light weight.
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,
·Uses a diamond 136˚square pyramid ·This hardening layers by ·Applicable to small and thin 25,26,27,28,30,32,34,35,36,38,40,42,45,46,48,50
indenter. Hardness value is obtained induction hardening, carburizing, specimens.
from the surface area of the dent, nitriding, electrolytic plating, ·Applicable to all materials Sulfuric and Sulfur 12L14 Carbon
Vickers Hardness computed from the experimental load ceramic coating, etc. because of diamond indenter. JIS Z2244 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
and the length of the diagonal lines ·Hardening layer depth
of the dent.(Automatically calculated) in carburized and nitrided parts. High Carbon 52100 Bearing 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,
Round Bar D
Chrome Bearing Steel Steel 100,110,120,130,140,150,(160),(170),(180),(190),(200),(210),(220),(230),(240),(250)

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 [Materials] [Materials Data]
Standard Material Sizes 2 Comparisons of Materials between JIS and Foreign Standards 1

Q Stainless Steel Materials Q Carbon Steel for Machine Structural Use, Alloy Steel
Japan Industrial Standards Steel Type Related to Foreign Standards Japan Industrial Standards Steel Type Related to Foreign Standards
Type Material Code Shapes Unit Standard Dimensions BS Standard Number ISO AISI BS
DIN EN 10084 NF A35−551 OCT
Standard Number ISO AISI DIN EN 10084 NF A35-551 OCT Symbol 970 Part1,3
Name Symbol 683/1,10,115) SAE
970 Part1,3
DIN EN 10083−1,2 NF EN 10083−1,2 4543 Name 683/1,10,115) SAE BS EN 10083−1,2 DIN EN 10083−1,2 NF EN 10083−1,2 4543
BS EN 10083−1,2
Austenite 303 Stainless Steel Round Bar 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 SNC236 − − − − − 40XH
JIS G 4051 040A10 C10E JIS G 4102
S10C C10 1010 045A10 XC10 − SNC415 − − − − − −
Flat Bar 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 Carbon Steel for 045M10 C10R Nickel-Chromium SNC631 − − − − − 30XH3A
Machine Structural Use Steel SNC815 15NiCr13 − 655M13 15NiCr13 − −
S12C − 1012 040A12 − XC12 −
Square Bar _ 5,6,7,8,9,10,12,13,14,15,16,19,20,22,25,28,30,32,36,38,40,45,50,60 S15C C15E4 1015 055M15 C15E − −
SNC836 − − − − − −
C15M2 C15R JIS G 4103 8615 805A20
Hexagonal Bar Opposite side H 8,10,14,17,19,21,22,23,24,26,29,30,32,35,36,38,41,46 S17C − 1017 − − XC18 − Nickel Chrome SNCM220 20NiCrMo2
20NiCrMoS2
8617
8620
805M20
805A22
20NiCrMo2
20NiCrMoS2 20NCD2 −
304 Stainless 070M20 Molybdenum 8622 805M22
Austenite Steel 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, S20C − 1020 C22 C22
C22E
C22
C22E − Steel 41CrNiMo2 8637
C22E C22R C22R SNCM240 − − − −
C22R 41CrNiMoS2 8640
Round Bar D 38,40,42,45,46,48,50,55,60,65,70,75,80,85,90,95,100,110,120,130,140,150,160,170, S22C − 1023 − − − − SNCM415 − − − − − −
180,190,200,210,220,230 C25 C25 C25 C25 SNCM420
SNCM431
−
−
4320
−
−
−
−
−
−
−
20XH2M(20XHM)
−
S25C C25E4 1025 C25E C25E C25E −
C25M2 C25R C25R C25R SNCM439 − 4340 − − − −
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 S28C − 1029 − − − 25 SNCM447 − − − − − −
SNCM616 − − − − − −
080A30
C30 080M30 C30 C30 SNCM625 − − − − − −
S30C C30E4 1030 C30 C30E C30E 30 SNCM630 − − − − − −
Q Copper Alloy Materials C30M2 C30E
C30R
C30R C30R SNCM815 − − −
17Cr3
− −
15X
−
JIS G 4104 SCr415 − − − 17CrS3 − 15XA
Type Material Code Shapes Unit Standard Dimensions S33C
C35
− −
C35
−
C35
−
C35
− 30 Chrome Steel
SCr420 20Cr4 5120 − − − 20X
S35C C35E4 1035 C35E C35E C35E 35 20CrS4
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, C35M2 C35R C35R C35R 34Cr4 5130 34Cr4 34Cr4 34Cr4
Brass Plate C28000 Brass Steel Plate t S38C − 1038 − − − 35
SCr430 34CrS4 5132 34CrS4 34CrS4 34CrS4 30X
5,6,7,8,9,10,12,15,20,25,30,40,50 080M40 34Cr4
C40 C40 C40 34CrS4 37Cr4 37Cr4 37Cr4
1039 C40 SCr435 5132 35X
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, S40C C40E4 1040 C40E C40E C40E 40 37Cr4 37CrS4 37CrS4 37CrS4
Square Bar _ C40M2 C40R C40R C40R 37CrS4
40,42,45,50,55,60,65,70,75,80,85,90,95,100 1042 37Cr4
S43C − 080A42 − − 40 37CrS4 530M40 41Cr4 41Cr4
1043 SCr440 5140 41Cr4 40X
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, C45 C45 C45 C45
41Cr4 41CrS4 41CrS4 41CrS4
Hexagonal Bar Opposite side H S45C C45E4 1045 C45E C45E C45E 45
41CrS4
Free-Cutting Brass C3604 BD Brass 35,36,38,40,41,42,44,45,46,50,54,55,58,60,65,70,75,80 C45M2
1046
C45R C45R C45R SCr445 − − − − − 45X
SCM415 − − − − − −
(Extruded Bar) (JIS) S48C − − 080A47 − − 45 JIS G 4105
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, C50 080M50 C50 C50 Chrome Molybdenum SCM418 18CrMo4
18CrMoS4
− − 18CrMo4
18CrMoS4
− 20XM
C50
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, S50C C50E4 1049 C50E C50E C50E 50 Steel SCM420 − − 708M20 − − 20XM
Round Bar D C50M2 C50R C50R C50R SCM421 − − − − − −
100,105,110,115,120,125,130,135,140,145,150,160,170,180,190,200,210,220,230,240, 1050 SCM430 − 4131 − − − 30XM
S53C − − − − 50 30XMA
250,270,280,300,320,350 1053
SCM432 − − − − − −
C55 070M55 C55 C55
C55 SCM435 34CrMo4 4137 34CrMo4 34CrMo4 34CrMo4 35XM
S55C C55E4 1055 C55E C55E C55E − 34CrMoS4 34CrMoS4 34CrMoS4 34CrMoS4
C55M2 C55R C55R C55R
708M40

Q Aluminum Alloy Materials C60 C60 C60 C60 SCM440 42CrMo4 4140 709M40 42CrMo4 42CrMo4 −
S58C C60E4 1059 C60E C60E C60E 60 42CrMoS4 4142 42CrMo4 42CrMoS4 42CrMoS4
C60M2 1060 C60R C60R C60R 42CrMoS4
Type Material Code Shapes Unit Standard Dimensions S09CK − − 045A10 C10E XC10 − SCM445 −
4145
− − − −
045M10 4147
SCM822 − − − − − −
Flat Bar t 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 S15CK − − − C15E XC12 −
SNB5 − 501 − − − −
S20CK − − − − XC18 − JIS G 4107
SMn420 22Mn6 1522 150M19 − − − 4140 708M40
42CrMo4
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, JIS G 4106 High-Temperature SNB7 4142 709M40 42CrMo42) 42CrMo44) −
Al-Cu Alloy 2017 Aluminum Manganese Steel SMn433 − 1534 150M36 − − 30
35
2
2
Alloy Steel for Bolts 42CrMoS4
4145 42CrMo41)
Alloy 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, and Chrome-Manganese SMB16 − − 40CrMoV4−61) 40CrMoV473) 40CrMoV4−64) −
Round Bar D SMn438 36Mn6 1541 150M36 − −
35 2
SNB21−1~5 − − 40CrMoV4−61) 40CrMoV473) 40CrMoV4−64) −
61,62,63,64,65,70,75,80,85,90,95,100,105,110,115,120,125,130,135,140,150,160,170, Steel for Machine 40 2 JIS G 4108
42CrMo4
Structural Use 40 2 Steel Bar for SNB22−1~5 4142H − 42CrMo4 2)
− −
180,190,200,210,220,230,240,250,260,280,300 SMn443 42Mn6 1541 − − −
45 2 Special-Purpose
42CrMoS4
SMnC420 − − − − − − SNB23−1~5 − E4340H − − − −
Alloy Bolts SNB24−1~5 − 4340 − − − −
SMnC443 − − − − − −
5052 Aluminum 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,
Al-Mg Alloy Flat Bar t JIS G 4202 Cautions 1) BS EN 10259
Alloy 50,55,60,65,70,75,80,85,90,95,100,105,110,120,130,150,160,170,180,200 Aluminum Chrome
SACM645 41CrAIMo74 − − − − − 2) DIN 1654 Part 4
Molybdenum 3) DIN 17240
Steel
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, JIS G 4052
SMn420H 22Mn6 1522H − − − −
4) NF EN 10259
5) ISO683-1, 10 and 11 have been translated into JIS as JIS G 7501, G 7502 and G 7503.
SMn433H − − − − − −
5056 Aluminum Round Bar 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, Structural Steel
Al-Mg Alloy D SMn438H 36Mn6 1541H − − − −
Alloy 75,80,85,90,95,100,105,110,115,120,125,130,135,140,150,160,170,180,190,200,210,220,230, with Guaranteed SMn443H 42Mn6 1541H − − − − ISO:International Organization for Standardization
AISI:American Iron and Steel Institute
Hardenability SMnC420H − − − − − −
240,250,260,270,280,290,300,310,320,330,340,350,360,370,380,390,400,420 (H Steel) SMnC443H − − − − − − SAE:Society of Automotive Engineers
17Cr3 BS:British Standards
SCr415H − − − 17CrS3 − 15X DIN:Deutsches Institut für Nörmung
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 20Cr4 EN:European Standards
SCr420H 5120H − − − 20X NF:Norme Francaise
20CrS4
34Cr4 5130H 34Cr4 34Cr4 34Cr4 OCT:National Standards of Former USSR
SCr430H 34CrS4 5132H 34CrS4 34CrS4 34CrS4 30X
Q Resin Type Materials 34Cr4 Names of Tool Steels
SCr435H 34CrS4 5135H 37Cr4 37Cr4 37Cr4 35X
Type Material Code Shapes Unit Standard Dimensions 37Cr4
37CrS4
37CrS4 37CrS4 37CrS4
Rolled Steel for General Structure SS400·············· Steel, Structure, 400N/mm2
Carbon Steel for Mechanical Structure S45C················ Steel, 0.45%C
Laminated Sheet Bakelite Plate t (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. 37Cr4
37CrS4 41Cr4 41Cr4 41Cr4
SCr440H 41Cr4 5140H 41CrS4 41CrS4 41CrS4 40X Chrome Molybdenum Steel SCM435··········· Steel, Cr, Mo 435
Plate t 5,10,15,20,25,30,40,50 41CrS4 Nickel Chrome Molybdenum Steel SNCM220········· Steel, Ni, Cr, Mo 220
Polyamide Resin Nylon 6, 66 SCM415H − − − − − −
Carbon Tool Steel SK105·············· Steel, Tool(Kogu, in Japanese), Type105
Bar D 6,8,10,15,20,25,30,35,40,45,50,55,60,65,70,75,80,90,100,120,140,160,180,200 SCM418H 18CrMo4
18CrMoS4
− − 18CrMo4
18CrMoS4
− −
(Old SK3)
SCM420H − − 708H20 − − −
Plate t 5,7,10,12,15,20,25,30,35,40,45,50,60,70,80,90,100,110,120 34CrMo4 4135H 34CrMo4 34CrMo4 34CrMo4 Alloy Tool Steel SKS3················ Steel, Tool(Kogu, in Japanese), Special, Type 3
SCM435H 34CrMoS4 4137H 34CrMoS4 34CrMoS4 34CrMoS4 −
(MC Nylon) MC Nylon 20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,95,100,110,120,130,140,150,160,170, 42CrMo4 4140H 42CrMo4 42CrMo4 42CrMo4
Alloy Tool Steel SKD11·············· Steel, Tool(Kogu, in Japanese), Dies, Type 11
Bar D SCM440H 42CrMoS4 4142H 42CrMoS4 42CrMoS4 42CrMoS4 −
High-Speed Tool Steel SKH51·············· Steel, Tool(Kogu, in Japanese), High Speed, Type 51
180,190,200,225,250,275,300,325,350,375,400,450,500,600 4145H
SCM445H − 4147H − − − − High Carbon Chrome Bearing Steel SUJ2················· Steel, Use, Bearing, Type 2
Plate t 5,6,8,10,12,15,20,25,30,35,40,50,60,70,80,90,100 SCM822H − − − − − − Stainless Steel SUS304············ Steel, Use, Stainless, Type 304
SNC415H − − − − − −
Acetal Resin Polyacetal 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, SNC631H − − − − − − Gray Cast Iron FC250··············· Ferrum(  Iron ), Cast, 250N/mm2
Bar D SNC815H 15NiCr13 − 655H13 15NiCr13 − −
90,100,110,120,(130),(140),150,(160),(180),200 8617H 805H17
SNCM220H 20NiCrMo2 8620H 805H20 − 20NCD2 −
20NiCrMoS2
General Methacrylic 8622H 805H22
Acrylic Plate t 0.8,1,1.5,2,3,4,5,6,8,10,15,20,25,30 SNCM420H − 4320H − − − −
Resin Plate

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