DIN / EN · Europe · 39 designations

HDT450F

HDT450F is a material in the category High-strength multi-phase steels, held under material number 1.0961. We list 38 designations recorded for this grade, in the standards DIN / EN, AISI / SAE, BS, AFNOR, UNE, JIS, GB, GOST, UNI, ČSN, PN, MSZ, AS / NZS, BDS and NBN. Its recorded composition includes C ≤ 0.18%, Si ≤ 0.5%, P 0.03%, V ≤ 0.15% and Mn ≤ 1.2%. Recorded mechanical properties include Rm 900–1270 N/mm², Re 1175 N/mm², A5 6–8%, HB 269–302 and Z 25%; these figures vary with the delivery condition and dimension. Its recorded density is 7.52–7.85 g/cm³. Further recorded physical values: E 134–212 GPa, λ 28–30 W/(m·K), α 11.8–14.5 ·10⁻⁶/K and cp 510–700 J/(kg·K); several of these are temperature-dependent. Recorded transformation points: Ac1 770 °C, Ac3 820 °C, Ar1 700 °C and Ar3 770 °C. It is recorded as not intended for welding.

Material no. 1.0961
Category High-strength multi-phase steels · 5 grades
Designations 39

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About High-strength multi-phase steels

High-strength multi-phase steels are iron-based materials with multiple microstructural constituents designed to provide high strength with useful ductility. They are used for load-bearing and crash-relevant components where weight reduction, structural performance and energy absorption are important.

This describes the material class as a whole. Always confirm the individual grade against the standard before ordering.

Also known as

39 designations · 15 standards · nothing hidden

This grade’s own namerecorded in our sources as this grade’s own designation under that standard.

Indicativetaken from a published cross-reference table; a close match, not a guarantee of interchangeability. Verify against the mill certificate before ordering.

Withdrawndesignation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.

DIN / ENEurope · 4

AISI / SAEUnited States · 5

BSUnited Kingdom · 5

AFNORFrance · 3

UNESpain · 5

JISJapan · 2

GBChina · 2

GOSTRussia / CIS · 3

UNIItaly · 2

ČSNCzechia · 1

13270Indicative

PNPoland · 1

60S2Indicative

MSZHungary · 1

61Si7Indicative

AS / NZSAustralia / New Zealand · 3

BDSBulgaria · 1

60S2Indicative

NBNBelgium · 1

60Si7Indicative

Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here.

Chemical composition

8 elements on file · weight %

What this alloy is

Iron — the balance, never listed by a standard — 97.9 %Mn — 1.2 %Si — 0.5 %C — 0.2 %Traces & impurities · 0.2 %

Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade.

Element	% by weight
	≤ 0.18
	≤ 0.5
	≤ 1.2
	0.03
	0.01
	≤ 0.15
	≥ 0.015
	≤ 0.005

0.01 %0.1 %1 %10 %100 %

The scale is logarithmic, not the element’s raw share of the alloy — the only honest way to fit 0.01 % and 100 % in one picture, and it means every value here can be compared with every other.

Element	As publishedsource text, verbatim	Min% by weight	Max% by weight	Bound
B	≤0,005	—	0.005	Max
C	≤0,18	—	0.180	Max
Al	≥0,015	0.015	—	Min
Si	≤0,50	—	0.500	Max
P	0,03	0.030	0.030	Exact
S	0,01	0.010	0.010	Exact
V	≤0,15	—	0.150	Max
Mn	≤1,20	—	1.200	Max

(Cr+Mo)≤0,30; (Nb+Ti)≤0,05
(Cr+Mo)≤0,30; (Nb+Ti)≤0,05
(Cr+Mo)≤0,30; (Nb+Ti)≤0,05

The published column is the source string byte-for-byte, decimal comma and all; Min and Max are the parsed bounds. Elements not listed have no value on file — they are omitted, never inferred.

Predicted transformation temperatures

Not enough recorded composition to predict a transformation temperature for this grade — missing: Ni, Cr, Mo.

Physical & mechanical properties

Density7,85g/cm³Exact

Transformation point Ac1770°CExact

Transformation point Ac3820°CExact · Ac3(Acm)

Transformation point Ar3770°CExact · Ar3(Arcm)

Transformation point Ar1700°CExact

Weldabilitynot suitable for weldingAs published: is not used.

Flake sensitivitynot susceptibleAs published: not predisposed

Temper brittlenessnot susceptibleAs published: not predisposed

An absent property means we hold no value for it — it is left out rather than estimated, interpolated from a neighbouring grade, or filled from a handbook. It does not mean the property is undefined for the material.

Properties by condition

3 conditions · 48 values

By delivery stateno delivery state statedsource splav

Delivery state	RmN/mm²	A5%	HB
Band annealed	900	8	—
(annealing) , GOST 14959-79	—	—	269
(without heat treatment) , GOST 14959	—	—	302

By heat-treated conditionno delivery state statedsource splav

Heat-treated condition	RmN/mm²	ReN/mm²	A5%	Z%
Rolled stock, GOST 14959-79	1270	1175	6	25

At temperatureno delivery state statedsource splav

Temperature°C	Densityg/cm³	Elastic modulusGPa	Thermal expansion coefficient10^-6/K	Thermal conductivityW/(m·K)	Specific heat capacityJ/(kg·K)
20	7.68	212	—	28	—
100	7.66	206	11.8	29	510
200	7.63	198	12.7	29	510
300	7.59	192	13.3	30	520
400	7.57	181	13.7	30	535
500	7.52	178	14.1	30	565
600	—	158	14.5	29	585
700	—	144	14.4	29	620
800	—	134	12.2	28	700

Every figure holds only for the condition on its own row. Values are never merged across conditions or across sources, never averaged, and never interpolated between two rows. An em dash means no value on file — never zero. Figures are converted to the unit in the column header; the source’s own wording is kept and shown where the two differ.

Similar grades — and why

Selection rule, stated so you can disagree with it: same number class 1.0, a shared category, and a published range for Mn / Si that overlaps this grade’s. These are neighbours in composition space — they are not equivalents, and none is claimed to be interchangeable with this grade.

HDT560F1.0959

Mn ≤1,80 · Si ≤0,50