MATERIAL DATA SHEET
STEEL GRADE
Last revised: Thu, 16 Jan 2025 14:12:33 GMT
All
16MnCr5
General Information
16MnCr5 is an alloyed case hardening steel used for e.g. mechanical engineering components.The steel
can be M-treated in order to optimize the machinability.
For additional Heat Treatment Data, please visit the Heat Treatment Guide.
Similar designations
16MnCrS5, EN ISO 683-17, 17MnCr5, 1.7131, 1.7139, 1.3521
Chemical composition
Variant Cast Weldability C % Si % Mn % P % S % Cr % Ni % Mo % V % Cu %
CEV 0.69max Min 0.14 0.15 1.05 - 0.015 0.85 - - - -
234K IC
Pcm 0.36max Max 0.19 0.35 1.30 0.020 0.025 1.10 0.20 0.10 0.100 0.20
CEV max Min 0.14 0.15 1.00 - - 0.80 - - - -
En ISO 683-3 Std
Pcm max Max 0.19 0.40 1.30 0.025 0.035 1.10 - - - 0.40
Mechanical Properties
Variant Format Dimension [ m m ] Hardness
Condition
+U All formats 24 < 190 230 HB typical
234K +A All formats 24 < 190 207 HB typical
+FP All formats 24 < 190 140-187 HB
Rp0.2 * Reh, ** Rel
Transformation
temperatures
Temperature °C
MS 430
AC1 734
AC3 827
Heat treatment recommendations
Treatment Temperature cycle Cooling/quenching
Condition
850-1200°C Slow or in air
Hot forging +U
670-710°C Slowly (15°C/h) until 600°C
Soft annealing +A
Stage1: 950-1000°C, quickly to stage 2
Hold for about 3h. Then cool in air
Annealing +FP
Stage 2: 620-650°C
860-890°C In air
Normalizing +N
600-680°C In air
Stress relieve annealing +SRA
880-980°C In air
Carburizing +C
860-900°C In oil or water
Quenching +Q
150-200°C In air
Tempering +T
Heat Treatment Guide generated Graphs
The following graphs are generated from a theoretical model. For further info see the Heat treatment
guide module. Select a specific grade version for individual display.
Tempering Diagram (hardness)
234K 16MnCr5
400
300
Hardness (Hv)
200
100
0
100 200 300 400 500 600 700
Tempering temperature (°C)
Tempering Diagram (strength)
1400 234K 16MnCr5 - Rm
234K 16MnCr5 - Rp.02
1200
1000
Strength (MPa)
800
600
400
200
0
100 200 300 400 500 600 700
Tempering temperature (°C)
Jominy
234K 16MnCr5
400
Hardness (Hv)
300
200
100
0
0 10 20 30 40 50
Depth (mm)
Hardenability
50
40
Hardness [HRC]
30
20
10
0
5 10 15 20 25 30 35 40
Distance [mm]
234K
SUSTAINABILITY-ENVIRONMENTAL IMPACT DATA
At Ovako sustainability and reduction of our environmental impact is a major focus in everything we
do.
Further information is found here.
Steel works Hofors Smedjebacken Imatra
CO2e/kg 120 62 76
To get the full picture of our products environmental impact we have to look at all of our CO2 emission
sources.
Not only the steel work Scope 1-2 itself, but all operations downstream in our production, heating and
heat treatment furnaces etc (full scope 1-2) as well as all the emission from input material, eg. alloys,
scope 3.
Steel Scope 1-3 (CO2e kg Climate compensated Net emission = Scope 3 (CO2e kg
Format
Grade Condition /1000 kg steel) /1000 kg steel) Scope 1 - 2 = 0 (compensated)
Round
234K +AR 610 211
bar
Round
234K +SA 615 214
bar
234K Tube,wall +AR 630 230
234K Tube,wall +SA 632 230
16MnCr5, Round
+AR 543 239
4306 (M) bar
16MnCr5, Round
+AR 552 250
4316 bar
To get the full picture of our products environmental impact we have to look at all of our CO2 emission
sources.
Not only the steel work Scope 1-2 itself, but all operations downstream in our production, heating and
heat treatment furnaces etc (full scope 1-2) as well as all the emission from input material, eg. alloys,
scope 3.
Other properties (typical values)
Youngs module (GPa) Poisson´s ratio (-) Shear module (GPa) Density (kg/m3)
210 0.3 80 7800
Specific heat
Average CTE 20- Thermal conductivity Ambient Electrical resistivityAmbient
capacity 50/100°C (J/kg
300°C (µm/m°K) temperature (W/m°K) temperature (µΩm )
°K)
12 460 - 480 40 - 45 0.20 - 0.25
Contact us
Would you like to know more about our offers? Don´t hesitate to contact us:
Via e-mail: info@ovako.com
Via telephone: +46 8 622 1300
For more detailed information please visit http://www.ovako.com/en/Contact-Ovako/
Disclaimer
The information in this document is for illustrative purposes only. The data and examples are only general recommendations and not a
warranty or a guarantee. The suitability of a product for a specific application can be confirmed only by Ovako once given the actual
conditions.The purchaser of an Ovako product has the responsibility to ascertain and control the applicability of the products before
using them. Continuous development may necessitate changes in technical data without notice. This document is only valid for Ovako
material. Other material, covering the same international specifications, does not necessarily comply with the properties presented in
this document.
