X30Cr13, Stainless Steel, Martensitic Stainless Steel

Overview

X30Cr13 is a kind ofmediumcarbon 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

X20Cr13has high hardness and good corrosion resistance under quenching condition.

Thissteel isacommonly 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

X30Cr13is 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. 235HBW.

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

Product Forms

Form	Size range
Capillary tube	OD 0.08 ~ 6.0 mm WT 0.015 ~ 1.5 mm
Thin wall & Ultra thin wall seamless tube	OD6.0~80.0 mm WT 0.05~4.5 mm
Micro ID and heavythick wall seamless tube	OD3.0~50.0 mm ID0.30~5.0mm
Precision conic seamless tube	Bigger end: OD3.0 - 426.0mm Smaller end: OD2.5 - 346.0mm WT: 0.15 - 40.0mm
HP/UHP BA+ tube EP tube	OD 1.0 ~ 76 mm WT 0.10 ~ 10.0 mm
Small caliber precision seamless tube	OD6.0 ~89mm WT 0.50 ~9.0 mm
Profiled seamless tube	Build to drawing Build to specification
Bourdon tube	Y40, Y50, Y60, Y70, Y100, Y150