UNI · Italy · 46 designations

HS6-5-2-2

HS6-5-2-2 is a designation in UNI for the material held under material number 1.3343, also listed as HS6-5-2C. It is a material in the category High-speed steels. We list 46 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, BS, AFNOR, UNE, ISO, JIS, GB, GOST, UNI, SS, ČSN, SRPS, PN, MSZ, STAS, BDS, ÖNORM and KS.

Material no. 1.3343
Category High-speed steels · 59 grades
Designations 46

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If you came for one of these

The most-used names for this grade.

About High-speed steels

High-speed steels are alloyed tool steels designed to retain hardness and cutting ability when tools heat up during high-speed machining. Their hot hardness and wear resistance make them suitable for cutting tools such as drills, milling cutters, taps and broaches.

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

Also known as

46 designations · 20 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Withdrawndesignation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.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 · 3

UNSUnited States · 1

T11302This grade’s own name

AISI / SAEUnited States · 5

BSUnited Kingdom · 3

AFNORFrance · 6

UNESpain · 4

ISOInternational · 2

JISJapan · 3

GBChina · 1

W6Mo5Cr4V2Indicative

GOSTRussia / CIS · 2

UNIItaly · 4

SSSweden · 2

ČSNCzechia · 1

19830Indicative

SRPSSerbia · 1

Č.7680Indicative

PNPoland · 1

SW7MIndicative

MSZHungary · 1

R6Indicative

STASRomania · 1

Rp5Indicative

BDSBulgaria · 2

ÖNORMAustria · 2

KSSouth Korea · 1

SKH51This grade’s own name

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

Chemical composition

9 elements on file · weight %

What this alloy is

Iron — the balance, never listed by a standard — 80.9 %W — 6.3 %Mo — 5 %Cr — 4.2 %Traces & impurities · 3.7 %

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

Element	% by weight
	0.86–0.94
	≤ 0.45
	≤ 0.4
	0.03
	0.03
	3.8–4.5
	4.7–5.2
	1.7–2.1
	5.9–6.7

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
C	0,86-0,94	0.860	0.940	Range
Si	≤0,45	—	0.450	Max
P	0,03	0.030	0.030	Exact
S	0,03	0.030	0.030	Exact
V	1,70-2,10	1.700	2.100	Range
Cr	3,80-4,50	3.800	4.500	Range
Mn	≤0,40	—	0.400	Max
Mo	4,70-5,20	4.700	5.200	Range
W	5,90-6,70	5.900	6.700	Range

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.

Physical & mechanical properties

Density8,12g/cm³Exact

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.

Similar grades — and why

Selection rule, stated so you can disagree with it: same number class 1.3, a shared category, and a published range for W / Mo 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.

1.32431.3243

W 5,90-6,70 · Mo 4,70-5,20