Alloy ХН33БС

Designation

Name	The value
Designation GOST Cyrillic	ХН33БС
Designation GOST Latin	XH33BC
Transliteration	HN33BS
By chemical elements	CrNi33BePb

Description

Alloy ХН33БС applied: exploitation in the form of the reaction tubes in installations for the production of methanol and ammonia and operating at temperatures up to +960 °C and an operating pressure of 3.92 N/mm².

Note

High-temperature chromium-Nickel alloy based on iron.

Standards

Name	Code	Standards
Steel pipes and fittings to them	В62	TU 14-1-5581-2009

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	As	Al	V	Ti	Mo	Zn	Sn	Pb	Nb	W	Ce	Co
TU 14-1-5581-2009	0.3-0.4	≤0.02	≤0.025	0.8-1.45	20-23	0.45-0.95	30-33	Rest	≤0.2	≤0.01	0.0005-0.1	0.0005-0.15	0.0005-0.15	≤0.25	≤0.01	≤0.01	≤0.01	1-1.7	0.05-0.2	0.07-0.11	≤0.1

Fe is the basis.
To TU 14-1-5581-2009 Simultaneously two obligatory additional conditions must be fulfilled:
Nickel equivalent =% Ni + 32% C + 0.6% Mn +% Cu = 40.08 - 46, 870%;
Equivalent chromium =% Cr + 3% Ti +% V +% Mo + 1.6% Si + 0.6% Nb = 21.322 - 26.39%.
The mass fraction of cerium is not determined, it is ensured by the technology of production of the alloy adopted at the plant.

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %
Pipe tsentrobezhnolityh (DH=100-300 mm, wall thickness of 10-25 mm) as supplied on THAT 14-1-5581-2009 (longitudinal samples)
	≥245	≥490	≥8

Description mechanical marks

Name	Description
s_T\|s_0,2	Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σ_U	Limit short-term strength
d₅	Elongation after rupture