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-----Brinell Hardness Test (HB)
Q. What is the HB for the cadmium plated (Cd10) the material no. is (1.7734.4) and protected by (Cd10)......?
Ahmed Ragab (third year...Aerospace department)
student (Aircraft Engineering) - 15th May, Cairo, Egypt
2006
A. DIN alloy steel 1.7734.4 (1.7734, air-cooled condition) has a yield strength of 550 MPa and a tensile strength of 700 MPa (101.5 ksi). This tensile strength equates to a Brinell hardness 215 (from
ASTM A370, Table 3).
The cadmium plating is presumably softer. To measure its hardness, a sample can be cut, mounted and polished with plating perpendicular to the polished surface (see ASTM E3 for metallographic preparation). Then, the plating's microhardness can be measured using a Knoop or Vickers indenter (see ASTM E384).
- Goleta, California
Finishing.com honored Ken for his countless carefully researched responses. He passed away May 14, 2015.Rest in peace, Ken. Thank you for your hard work which the finishing world, and we at finishing.com, continue to benefit from.
2006
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