10CrMo9-10 & 11CrMo9-10

EN 10216-2 Seamless steel tubes for pressure purposes – Technical delivery conditions – part 2: Non- alloy and alloy steel tubes with specified elevated temperature

This Part of EN10216 specifies the technical delivery conditions in two categories for seamless tubes of circular cross section, with specified elevated temperature properties, made of non-alloy and alloy steel.

Steel Grade: 10CrMo9-10 Steel Number: 1.7380

Steel Grade: 11CrMo9-10 Steel Number: 1.7383

Chemical composition (cast analysis)a, in % by mass
Elements 10CrMo9-1011CrMo9-10
P  max0.0250.025
S  max0.0200.020
Al total≤0.040≤0.040
Cu≤0.30 b≤0.30 b

a Elements not included in this Table shall not be intentionally added to the steel without the agreement of the purchaser, except for elements which may be added for finishing the cast. All appropriate measures shall be taken to prevent the addition of undesirable lelments from scrap or other materials used in the steel making process.
Option 2: In order to facilitate subsequent forming operations, an agreed maximum copper content lower than indicated and an agreed specified maximum tin content shall apply.

Mechanical properties

Steel gradeTensile properties at room temperatureImpact properties
Upper yield stength or proof strength ReH or RP0.2 for Wall Thickness T min.Tensile Strength RmElongation A min. % aMinimum average absorbed energy KV J at a temperature of ℃
T ≤1616<T≤4040<T≤6060<T≤100ltlt
10CrMo9-10280280270480 to 63022204027
11CrMo9-10355355355540 to 68020184027

a l = longitudinal t = transverse