X39Cr13
Material
X39Cr13, 1.4031, S42040, S136, 4Cr13
Overview
X39Cr13 is a kind of martensitic stainless steel with good mechanical processing performance. After heat treatment (quenching and tempering), it has excellent corrosion resistance, polishing performance, high strength and wear resistance.
Characteristics
X39Cr13 has similar performance and usage to 3Cr13. Because of the higher carbon content, X39Cr13 after quenching strength, hardness and corrosion resistance is higher than 3Cr13. It generally has a hardness of over HRC48 and good corrosion resistance after quenching, but its toughness and corrosion resistance slightly lower.
Its welding performance is poor, so it usually can not be used as a welding part.
It has strong resistance to nitric and organic acids.
It has good oxidation resistance, can be used in 600~650℃ for a long time.
Application
(1)Suitable for high mirror high precision injection mold and cavity.
(2)Since of high hardness and toughness after heat treatment, it can be used for stamping mold accessories, templates, dinner tools, outdoor tools, surgical tools, medical scissors, cutting tools, etc.
(3)It can be used for hot oil pumps, valves, valves, bearings, nozzles, springs, etc., which require certain corrosion resistance.
Chemical composition
X39Cr13 as per EN 10088-3 (wt%)
| C | Si | Mn | P | S | Cr |
|---|---|---|---|---|---|
| 0.36~0.42 | ≤0.60 | ≤0.80 | ≤0.040 | ≤0.030 | 12.5~14.5 |
| Ni | Mo | Cu | Sn | Al | N |
| ≤0.60 | ≤0.50 | ≤0.50 | ≤0.05 | ≤0.05 | ≤0.080 |
Heat treatment and hardness
Annealing temperature: 750°C, air cooling / quick cooling, hardness: max. 235 HBW
Quenching temperature: 1050~1100℃, oil cooling, hardness 50HRC min.
Tempering temperature: 200~300℃, air cooling / quick cooling.
Micro structure
The metallographic structure is characterized by martensitic type.
Available Process
- ◎ Hot worked
- ◎ Cold worked
- ◎ Cold worked and bright annealed
- ◎ Cold worked, annealed and pickled
- ◎ Cold worked, polished (MP, EP etc.)
- ◎ Cold worked, bright annealed, polished (MP, EP etc.)
Common Tests
- ◎ Chemical composition
- ◎ Tension
- ◎ Hardness
- ◎ Micro structure
- ◎ Eddy current
- ◎ Surface condition
- ◎ Shape and dimension
- ◎ Positive Material Identification
Precision seamless tube
- ◎ OD 16.0 ~ 168 mm
- ◎ WT 1.50 ~ 32.5 mm
Service
- ◎ Precision cutting
- ◎ Tube surface treatment, like ID surface super mirror polishing, best level could reach Ra0.0015um
- ◎ Tube deep processing, like coiling, bending, end forming, body forming, laser processing, various needles processing, built to drawing and sample, etc.