Products
Ni-Cr-Mo Alloy Steel
1. ＪＩＳ— Japanese Industrial Standards:JIS G4103 SNCM220、SNCM439
2. ＳＡＥ— Society of Automotive Engineers:SAE 8620 8660 4320 4340
The characteristic of the steel grade is with high hardness and wear resistance.
product quality
Material Description

They are heat treated with high hardness and abrasion resistance and can withstand high impact loads. It is mainly used for automotive bearings, spindles, gears, machine parts, etc. It is also used for screwdrivers (8650VS), hooks, etc.
If you have other requirements, such as testing surface hardness and core hardness and require the specified material, we can also customize our products according to your needs.
Main common materials: White cross: 8620 (SNCM 220) 8650VS, Blue cross: (SNCM420), 4340 (SNCM439)

Manufacturing Process

If you have other requested specification, please contact with sales or highlight on the order.

Applications

Conveyor belt I-shaped iron

Flat Head Bolts

Special Forgings

Electric Drill

 

Chemical Composition

JIS G3509-1 NiCrMo Steel Chemical Composition Table

Chemical Composition %
C Si (1) Mn P S Ni Cr Mo
SCM435HRCH 0.32~0.39 0.15~0.35 0.55~0.95 0.030 or below 0.030 or below 0.25 or below 0.85~1.25 0.15~0.35
SCM440RCH 0.38~0.43 0.60~0.90 0.90~1.20 0.15~0.30
SCM440HRCH 0.37~0.44 0.55~0.95 0.85~1.25 0.15~0.35
SCM445RCH 0.43~0.48 0.60~0.90 0.90~1.20 0.15~0.30
SCM445HRCH 0.42~0.49 0.55~0.95 0.85~1.25 0.15~0.35
SCM822RCH 0.20~0.25 0.60~0.90 0.90~1.20 0.35~0.45
SCM822HRCH 0.19~0.25 0.55~0.95 0.85~1.25
SNC415RCH 0.12~0.18 0.35~0.65 2.00~2.50 0.20~0.50 -
SNC415HRCH 0.11~0.18 0.30~0.70 1.95~2.50 0.20~0.55
SNC631RCH 0.27~0.35 0.35~0.65 2.50~3.00 0.60~1.00
SNC631HRCH 0.26~0.35 0.30~0.70 2.45~3.00 0.55~1.05
SNC815RCH 0.12~0.18 0.35~0.65 3.00~3.50 0.60~1.00
SNC815HRCH 0.11~0.18 0.30~0.70 2.95~3.50 0.55~1.05
SNCM220RCH 0.17~0.23 0.60~0.90 0.40~0.70 0.40~0.60 0.15~0.25
SNCM220HRCH 0.60~0.95 0.35~0.75 0.35~0.65 0.15~0.30
SNCM240RCH 0.38~0.43 0.70~1.00 0.40~0.70 0.40~0.60
SNCM420RCH 0.17~0.23 0.40~0.70 1.60~2.00
SNCM420HRCH 1.55~2.00 0.35~0.65
SNCM439RCH 0.36~0.43 0.60~0.90 1.60~2.00 0.60~1.00
SNCM447RCH 0.44~0.50
SNCM616RCH 0.13~0.20 0.80~1.20 2.80~3.20 1.40~1.80 0.40~0.60

SAE NiCrMo Steel Chemical Composition Table

UNS SAE Chemical Composition %
C Mn P S Si Ni Cr Mo Others
G86150 8615 0.16~0.18         0.40~0.70 0.40~0.60 0.15~0.25 -
G86170 8617 0.15~0.20
G86200 8620 0.18~0.23
G86220 8622 0.20~0.25
G86250 8625 0.23~0.28
G86300 8630 0.28~0.33
G86400 8640 0.38~0.43 0.75~1.00
G86450 8645 0.43~0.48
G86600 8660 0.56~0.64 0.035 以下

JIS G4053 Nickel-chromium-molybdenum alloy steel

Chemical Composition %
C Si Mn P S Ni Cr Mo
SNC 236 0.32~0.40 0.15~0.35 0.50~0.80 0.030 or below 0.030 or below 1.00~1.50 0.50~0.90 -
SNC 415 0.12~0.18 0.35~0.65 2.00~2.50 0.20~0.50
SNC 631 0.27~0.35 2.50~3.00 0.60~1.00
SNC 815 0.12~0.18 3.00~3.50
SNC 836 0.32~0.40
SNCM 220 0.17~0.23 0.60~0.90 0.40~0.70 0.40~0.60 0.15~0.25
SNCM 240 0.38~0.43 0.70~1.00 0.15~0.30
SNCM 415 0.12~0.18 0.40~0.70 1.60~2.00
SNCM 420 0.17~0.23
SNCM 431 0.27~0.35 0.60~0.90 0.60~1.00
SNCM 439 0.36~0.43
SNCM 447 0.44~0.50
SNCM 616 0.13~0.20 0.80~1.20 2.80~3.20 1.40~1.80 0.40~0.60
SNCM 625 0.20~0.30 0.35~0.60 3.00~3.50 1.00~1.50 0.15~0.30
SNCM 630 0.25~0.35 2.50~3.50 2.50~3.50 0.30~0.70
SNCM 815 0.12~0.18        

 

Package
Wire Wire Carrier Bar
Diameter 0.6MM~50MM Diameter 0.6MM~50MM Diameter 0.6MM~50MM
I.D. 200MM ~ 1000MM Wire Carrier Width 420MM~1000MM Non Chamfered L 2M~6M
O.D. 400MM ~ 1200MM Chassis W 1300MM~1600MM Chamfered L 2.5M~4M
Packahing Method PE IN＋PP OUT Wire Carrier Height 1000MM~1200MM Packing Method PE IN＋PP OUT
Weight 40KG~2250KG Packing Method 300kg~2250kg Weight 250KG~2250KG
Roll Direction Counter Clockwise or Clockwise        

 

 

Material Specification

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Mechanical Chart

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