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NSSC550

NSSC550

NSSC550 screws are martensitic grade with remarkably enhanced quench hardening.

1. High Strength :

 

Achieves high fastening power and no change in thread shape during tapping due to high centre hardness.

 

 

2. Super Toughness :

 

Achieves excellent high toughness by using an appropriate combination of components.

 

 

3. High corrosion resistance :

 

Superiority to the standard SUS304 in corrosion resistance achieved by the appropriate addition of Cr, Mo and N, as well as the control of trace elements.

 

 

* NSSC550 was developed by Nippon Steel & Sumikin Stainless Steel Corporation.

 

Products

Ingredients

  • C
  • Ni
  • Cr
  • Mo
  • N
  • 0.10-0.20
  • 1.00-2.40
  • 12.50-14.00
  • 1.80-2.30
  • 0.50-0.15

* Source : Nippon Steel & Sumikin Stainless Steel Corporation

Physical properties

  • Longitudinal elastic modulus N/mm2
  • Transverse elastic modulus N/mm2Transverse elastic modulus N/mm2
  • Density g/mm2
  • Thermal expansion coefficient x10-6/℃
  • 2.05×105
  • 7.94×104
  • 7.75
  • 11.5

* Source : Nippon Steel & Sumikin Stainless Steel Corporation

Mechanical properties

  • Tensile strength N/mm2
  • Shear Strength N/mm2
  • Surface hardness HV
  • Core hardness HV
  • Head toughness test
  • 1650
  • 1100
  • 550
  • 515
  • EXCELLENT

*Source : Marue

Corrosion resistance

Pitting corrosion potential

 

 

* Source : Nippon Steel & Sumikin Stainless Steel Corporation

Salt spray test (ISO9227, 1000h)

 

SUS410

 

 

NSSC550

 

 

* Source : Maruemu Works Co., Ltd.
* NSSC550 series have a “V” on the head as a mark.
NSSC550 also got the same result by Kestenich (Sulfur Dioxide) test (DIN 50018, 20cycles).

Precautions

1) Test data should be used only as a reference.
2) NSSC550 must not be used at temperature above 200 ℃ and highly corrosive environments.

Should you have any questions, please contact us through any of following channels.