What does the D stand for in the steel grade 16MND5

Question

I would like to know what does the "D" means in steel grade 16MND5.

According to the standard EN 10027:

16 means 0.16 % C MN 5 means 1.25 % Mn (5 must be divided by 4 to get the Mn mass fraction)

But nothing is specified for D.

score 0 · Answer 1 · edited Oct 04 '20 at 13:42

0

Having looked at the link,

D is for Flat products for cold forming, and is usually followed by two numbers characterising steel

Based on the diagram in the same link:

edited Oct 04 '20 at 13:42

grg

answered Jan 22 '19 at 11:17

Solar Mike

score 0 · Answer 2 · answered Jan 22 '19 at 18:07

This (Table 1, page 4) gives the composition of 16MND5-A508 as

> C     S     P     Mn   Si   Ni  Cr   Mo   V Cu Co Al N
> 0.159 0.008 0.005 1.37 0.24 0.7 0.17 0.5  <0.1
> Weight % - iron balance.

A508 is the relevant ASTM standards document (not a free publication.)

2 Answers2