X30Cr13

Material

X30Cr13, 1.4028, S42030, 3Cr13, SUS420J2

Overview

X30Cr13 is a kind of medium carbon martensitic stainless steel with high strength and plasticity. Martensitic stainless steel is a kind of stainless steel whose mechanical properties can be adjusted by heat treatment. Generally speaking, it is a kind of hardened stainless steel. After quenching hardness is higher, different tempering temperature has different combination of strength and toughness. The steel has good mechanical processing performance, after heat treatment (quenching and tempering), has excellent corrosion resistance, high polishing performance strength and wear resistance, suitable for manufacturing plastic mold bearing high load, high wear resistance and under the action of corrosive media.

Characteristics

X30Cr13 has high hardness and good corrosion resistance under quenching condition.

This steel is a commonly used stainless steel, with high thermal strength, oxidation resistance and good shock absorption. Good corrosion resistance in weakly corrosive media, and adequate corrosion resistance to fresh water, sea water, steam and air. Higher properties can be obtained after heat treatment.

Application

X30Cr13 is mainly used for high-strength parts and wear parts under high strength pressure load and corrosive medium conditions, such as working under 300 degrees Celsius tool, spring, 400 degrees Celsius working shaft. Bolts, valves, bearings, steam turbine blades, tableware, surgical instruments and so on.

Chemical composition

X30Cr13 as per EN 10088-3 (wt%)

C Si Mn P S Cr
0.26~0.35 ≤1.00 ≤1.00 ≤0.040 ≤0.030 12.0~14.0
Ni Mo Cu Sn Al N
≤0.60 ≤0.50 ≤0.50 ≤0.05 ≤0.05 ≤0.080

Typical mechanical property (in QT condition)

Rm MPa 735
Rp MPa 540
Z% 40
A% 12
Aku J 24

Heat treatment and hardness

Annealing temperature: 750~ 800°C°C, quick cooling, hardness: max. 235 HBW

Quenching temperature: 920~980℃, oil cooling.

Tempering temperature: 600~750℃, quick cooling.

The relationship between tempering temperature and hardness is shown in the table

Temperature ℃ After quenching 200 300 400 500 550 600 650
HRC 53 52 51 50 49 43 31 27

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.