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Other Types


Stock list

End applications

springs, bearing parts, disk springs, automobile parts, thrust washers, retainers

Chemical Composition

High-Carbon Chromium Bearing Steel

JIS Chemical Composition(%)
C Si Mn P S Cr Mo
SUJ2 0.95~1.10 0.15~0.35 0.50max 0.025max 0.025max 1.30~1.60 -

Boiler·Alloy Steel For Heat-Exchange Equipment

Nisshin Standard Chemical Composition(%)
C Si Mn P S Cr Mo
NTBA12 0.10~0.20 0.10~0.50 0.30~0.80 0.035max 0.035max - 0.45~0.65
NTBA25 0.15max 0.50max 0.30~0.60 0.030max 0.030max 4.00~6.00 0.45~0.65

Mechanical properties(hot rolled)

High-Carbon Chromium Bearing Steel

  Type of steel Annealing Hardening Tempering
Temperature(℃) Hardness(HRB) Temperature(℃) Hardness(HRC) Temperature(℃) Temperature(℃) Hardness(HRC)
JIS
SUJ 2 750air cooled 85~98 790~850oil quenched 62min 790~850oil quenched 150~200air cooled 61min

Boiler·Alloy Steel For Heat-Exchange Equipment

  Type of steel Annealing(℃) Mechanical properties
Yield strength(N/mm2) Tensile strength(N/mm2) Elongation(%) Hardness(HRB)
Nisshin Standard NTBA12 800air cooled 205min 870min 25min -
NTBA25 800air cooled 205min 410~550 20min 88max

Mechanical properties(cold rolled)

High-Carbon Chromium Bearing Steel

Type of steel Annealing Hardness Deep-Drawing Hardness
Standard Special
HV HV HV
JIS
SUJ2
≦220 ≦200 -

Boiler·Alloy Steel For Heat-Exchange Equipment

Type of steel Annealing Hardness Deep-Drawing Hardness
Standard Special
HV HV HV
Nisshin
Standard
NTBA12 ≦140 ≦130 -

For more information on Nisshin Steel materials, click the link below.
Click here for hot rolled catalog
Click here for cold rolled catalog

Notice

These material information in this page is based on Nisshin Steel Co.,Ltd. product catalog.

There are some cases maker do not accept the production depending on the production lot and specification.

Technical information in this website,while every reasonable effort was made to ensure the accuracy at the time of this publication, is general information relating to our products only and is not meant as any warranty,expressed or implied.
Such technical information does not guarantee that any of our products are suitable for your particular application or purpose. Use of any information contained in this website shall be at user's risk. Any information in this website is subject to change without prior notice. Please contact our company for up-dated information.

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