20X13 - 1.4021 - aisi 420 pipe

International Equivalent

Mark	Analogue	W. Nr.	Aisi Uns	En	Order
20X13	EJ2	1.4021	420	X20Cr13	Delivery from the stock, in stock

Composition and properties

The composition of heat-resistant stainless steel grade 20X13 according to GOST 5632 - - - - - - - 72 includes 12-14% chromium, 0.6% of nickel, manganese and silicon, 0.16 - 0.25% of carbon, thousands of percent of phosphorus and sulfur. The rest is iron. Pipes made of such martensitic steel have high corrosion resistance, are heat-resistant, strong and ductile. Heat resistance and ductility allow these pipes to be used in applications exposed to vibration and impact loads at about 550 °C, they can also withstand short-term heating up to 700 °C. Such pipes resist the action of atmospheric and soil moisture, are stable in solutions of organic acids, in weak solutions of nitric acid.

Percentage composition of grade 20X13 (GOST 5632-72)

Alloy	C	Si	Mn	Ni	Cr	P	S	Ti	Fe
20Х13	0,16-0,25	≤0,6	≤0,6	≤6	12-14	≤0,03	≤0,025	---	base

Mechanical qualities of semi-finished products^{at to} ^20o C

Range	GOST	_σB	_σT	_d5	KCU	Heat treatment
Bar	5949-75	510	375	20	Normalization
Bar	18 968-73	670	490-655	18	50	690
Bar of a given strength	18 907-73	510-780	14
Forgings ≤600 mm	, 25 054-81	47	441	14-16	40-50	390-640
Sheet 1 - 4 mm	5582-75	490	20	Tempering 740 - ^800o C,
Thick plate	7350-77	510	375	20	Normalization

_σB - short-term strength limit;

_σT - yield strength for permanent deformation.

_d5 - relative elongation at break.

Processing

Hot deformation is carried out at 1100 to 900 °C with cooling in air. Rolling and forging at 780 °C. Softening annealing and annealing at 500 °C are carried out at 750-800 °C. Quenching requires heating to 950-1000 °C and cooling in oil. Pipes are welded by electric arc, argon arc manual or automatic welding. If pipe wall thickness is more than 10 mm preliminary heating to 250-400 °C and final heat treatment to remove residual stresses is desirable.

Application

Such pipes are used in power engineering, in cracking units, for disposal of red-hot gases, in steam generators and pumps. They are widely used by chemical, oil industry, shipbuilding, food and medical industries. Recently, the construction industry for the creation of decorative architectural elements.

Delivery

We supply certified semi-finished products of 20X13 grade. The technical documentation includes data on the chemical composition, the limiting percentage of impurities; mechanical qualities of products. With us you can buy in bulk any products for large-scale production. We also offer optimum conditions for retail buyers. High level of service and prompt service is the face of our company.

Buy at the best price

All stainless alloys sold by Evek GmbH comply with the state quality standard. We supply rolled metal products of standard and non-standard sizes in the shortest terms. High quality, reasonable prices and a wide range of products determine the face of our company. Becoming our regular customer, you can count on a system of discount discounts. Cooperation with us will help you realize any engineering plans. We are waiting for your orders on our site.