X39CrMo17-1, 1.4122, X38CrMo16, 1.2316 - Martensitic stainless and tool steel in accordance with ISO 4957, EN 10088-3.
| Standard | Steel Grade | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chemical composition % | |||||||||
| C: | Mn: | Si: | P: | S: | Cr: | Mo: | Ni: | ||
| EN | X39CrMo17-1 - 1.4122 | ||||||||
| 0.33 - 0.45 | <1.5 | <1.0 | <0.04 | <0.03 | 15.5 - 17.5 | 0.8 - 1.3 | <1.0 | ||
| ISO | X38CrMo16 - 1.2316 | ||||||||
| 0.33 - 0.45 | <1.5 | <1.0 | <0.03 | <0.03 | 15.5 - 17.5 | 0.8 - 1.3 | <1.0 | ||
| DIN | X36CrMo17 - 1.2316 | ||||||||
| 0.33 - 0.43 | <1.0 | <1.0 | <0.03 | <0.030 | 15.0 - 17.0 | 1.0 - 1.3 | <1.0 | ||
| NF | Z38CD16-01 | ||||||||
| 0.33 - 0.45 | <1.0 | <1.0 | <0.04 | <0.015 | 15.5 - 17.5 | 0.8 - 1.3 | - | ||
| NF | Z35CD17 | ||||||||
| 0.33 - 0.45 | <1.5 | <1.0 | <0.03 | <0.03 | 15.5 - 17.5 | 0.8 - 1.3 | <1.0 | ||
| PN | 3H17M | ||||||||
| 0.33 - 0.43 | <1.0 | <1.0 | <0.045 | <0.030 | 15.5 - 17.5 | 1.0 - 1.3 | <1.0 | ||
X39CrMo17-1, 1.4122, X38CrMo16, 1.2316 - specification and application
Chrome-molybdenum stainless martensitic steel for quenching, showing the structure of perlite after heat treatment. After hardening and tempering it reaches the hardness of 220 - 275 HB depending on the dimensions.
It shows corrosion resistance in environments containing nitric acid in low concentrations, nitrate, bicarbonate and ammonium nitrite, zinc carbonate, manganese chloride, vinegar, potassium nitrate and mixtures, sodium chloride, sodium hydroxide, water, steam, acetone, alcohol, gasoline, glycerine, chloroform, oleic acid and salicylic acid.
It is not resistant to chlorine solutions, hydrochloric acid, acetic acid, hydrofluoric acid, orthophosphoric acid, potassium sulphate, sulphuric acid, citric acid, lactic acid, formic acid, oxalic acid and tartaric acid.
The conclusion from the chemical composition cannot be ignored without stating that grade 1.4122 and derivatives are more suitable in the form of a product for the production of mechanical elements that exhibit basic corrosion resistance than vice versa. The product has excellent mechanical properties in basic corrosive environments, if properly treated, does not corrode, exhibits good properties at elevated temperatures, good polishing properties, is unfortunately not suitable for welding and is not resistant to intergranular corrosion.
The closest equivalent of 1.4122 / X39CrMo17-1 classified as a tool steel is X36CrMo17 / 1.2316. 1.4122 is a great alternative to 4H13 / X46Cr13 / 1.4034 grade - it has similar properties and much better corrosion resistance. It is used in industry for the production of shafts, gears, spindles, bodies and moulds for the production of plastics, metal casting, mandrels, valves, toolholders, screws, pins and surgical instruments.
Mechanical properties X39CrMo17-1, 1.4122 in accordance with EN 10088-3, EN 10088-1:
- Delivery condition +A
- Dimensions 63-160mm
- Tensile strength, Rm <900 MPa
- Hardness, HB< 280
- Dimensions 40-63mm
- Tensile strength, Rm <930 MPa
- Hardness, HB< 290
- Dimensions 16-40mm
- Tensile strength, Rm <980 MPa
- Hardness, HB< 310
- Dimensions <16mm
- Tensile strength, Rm <1000 MPa
- Hardness, HB< 340
- Dimensions 63-160mm
- Delivery condition +QT750
- Dimensions <10mm
- Tensile strength, Rm 800 - 1050 MPa
- Yield strength, Re >650
- Elongation, A: >8%
- Dimensions 10-16mm
- Tensile strength, Rm 800-1050 MPa
- Yield strength, Re >600
- Elongation, A: >8%
- Dimensions 16-40mm
- Tensile strength, Rm 750 - 1050 MPa
- Yield strength, Re >550
- Elongation, A: >10%
- Impact strength, KV: >14 J
- Dimensions >40mm
- Tensile strength, Rm 750 - 950 MPa
- Yield strength, Re >550
- Elongation, A: >12%
- Impact strength, KV: >10 J
- Dimensions <10mm
- Other physical and mechanical properties:
- Modulus of elasticity E = 215 GPa
- Thermal conductivity λ = 15 W ⋅ m-1 ⋅ K-1
- Thermal capacity cp = 430 J ⋅ kg-1 ⋅ K-1
- Resitivity, Ω: 0.80 mkOhm * m
- Linear expansion coefficient, α: 10,4 * 10-6 K-1
Operation at elevated temperatures of 1.4122, X39CrMo17-1 in +QT750 condition:
| Properties | Temperatures | |||||||
|---|---|---|---|---|---|---|---|---|
| 100℃ | 150℃ | 200℃ | 250℃ | 300℃ | 350℃ | 400℃ | ||
| Yield strength, Rp0,2 (MPa) | >540 | >535 | >530 | >520 | >510 | >490 | >470 | |
| Modulus of elasticity, E (GPa) | 212 | - | 205 | - | 200 | - | 190 | |
| Linear expansion coefficient, α (* 10-6 K-1) | 10.4 | - | 10.8 | - | 11.2 | - | 11.6 | |
Mechanical properties of 1.2316, X38CrMo16 according to ISO 4957
- Improved condition +QT - hardness 300 HB
Heat treatment - processes and temperatures:
- Annealing at a temperature of 750 - 850℃
- Hardening at 980 - 1060℃
- Tempering at 650 - 750℃
- Cooling in oil
- Plastic forming at 1100 - 800℃
In the above mentioned grades we supply the following metallurgical products:
Other substitutes and equivalents according to foreign standards:
35MoCr165, GX35CrMo17, Z38CD16-1, Z35CD17, 35Х16НМ, 40Х16М, X38CrMo16, 420Mod, X36CrMo17, X35CrMo17, 35H16NM, 40H16M