Comparison and Difference

BAINITE SAE J2175 v.s TEMPERED MARTENSITE SAE J827

 

 

 

SPECIFICATION

BAINITE

SAE J2175

TEMPERED MARTENSITE

SAE J827

Carbon

0.10 to 0.15 %

 0.60 – 1.20 %

Silicon

0.10 to 0.25 %

                        0.40 % min.

Manganese

1.20 to 1.50 %

 0.35 – 1.20 %

Aluminum

0.05 to 0.15 %

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Phosphorus

                0.035 % max.

0.050 % max.

Sulfur

                0.035 % max.

0.050 % max.

HARDNESS

                 40 – 50 Rc

                        40 – 51 Rc

% ROUNDS AND HOLLOWS

<15% non-spherical

(length>2 x width)and holows

<15 % non-spherical (length > 2 x width) and hollows

NON-MAGNETIC

MATERIAL

< 1% non-magnetıc material 

< 1 % non-magnetic material

DENSITY

>7 g /cc (wet  method)

> 7 g /cc (wet method)