AFNOR · France · 101 designations

15CD2.05

15CD2.05 is a designation in AFNOR for the material held under material number 1.7335, also listed as 13CrMo4-5. It is a material in the category Heat-resistant structural steels. We list 101 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, ASTM, BS, AFNOR, UNE, ISO, JIS, GB, GOST, UNI, SS, ČSN, STN, PN, SRPS, MSZ, STAS, BDS, ÖNORM, NBN and KS.

Material no. 1.7335
Category Heat-resistant structural steels · 62 grades
Designations 101

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If you came for one of these

The most-used names for this grade.

About Heat-resistant structural steels

Heat-resistant structural steels are structural steels designed to retain useful strength and dimensional stability at elevated temperatures. They are used for load-bearing components in hot-service equipment where mechanical performance must be maintained during heating.

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

Also known as

101 designations · 23 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Withdrawndesignation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.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

UNSUnited States · 8

AISI / SAEUnited States · 19

ASTMUnited States · 5

BSUnited Kingdom · 10

AFNORFrance · 9

UNESpain · 4

ISOInternational · 3

JISJapan · 7

GBChina · 2

GOSTRussia / CIS · 9

UNIItaly · 4

SSSweden · 1

2216Indicative

ČSNCzechia · 2

STNSlovakia · 1

15 121Indicative

PNPoland · 1

15HMIndicative

SRPSSerbia · 1

Č.7400Indicative

MSZHungary · 2

STASRomania · 1

14CrMo4Indicative

BDSBulgaria · 3

ÖNORMAustria · 1

13CrMo4-4KWIndicative

NBNBelgium · 1

14CrMo45Indicative

KSSouth Korea · 3

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 — 97 %Cr — 0.9 %Mn — 0.7 %Mo — 0.5 %Traces & impurities · 0.8 %

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

Element	% by weight
	0.08–0.18
	≤ 0.35
	0.4–1
	0.025
	0.01
	0.7–1.15
	0.4–0.6
	≤ 0.3
	0.012

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	0,08-0,18	0.080	0.180	Range
N	0,012	0.012	0.012	Exact
Si	≤0,35	—	0.350	Max
P	0,025	0.025	0.025	Exact
S	0,01	0.010	0.010	Exact
Cr	0,70-1,15	0.700	1.150	Range
Mn	0,40-1,00	0.400	1.000	Range
Cu	≤0,30	—	0.300	Max
Mo	0,40-0,60	0.400	0.600	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

Density7,85g/cm³Exact

Transformation point Ac1740°CExact

Transformation point Ac3875°CExact · Ac3(Acm)

Weldabilityreadily weldableAs published: without limitations.

Flake sensitivitysusceptibleAs published: 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

5 conditions · 51 values

By thicknessno delivery state statedsource steelnumber

Thicknessmm	ReHN/mm²	RmN/mm²
≤ 16	290 – 300	—
16 – 60	290	—
≤ 60	—	450 – 600
60 – 100	270	440 – 590
100 – 150	255	430 – 580
150 – 250	245	420 – 570

By delivery stateno delivery state statedsource splav

Delivery state	RmN/mm²	ReN/mm²	A5%	HB
Pipe, GOST 8731-87	431	225	21	—
(annealing) , GOST 4543-71	—	—	—	179

By heat-treated conditionno delivery state statedsource splav

Heat-treated condition	RmN/mm²	ReN/mm²	A5%	Z%	KCUkJ/m²
Bar	540	350	25	67	2700

By dimensionQuenching 880°C, air, Drawing 650°C, airsource splav

Dimensionmm	RmN/mm²	ReN/mm²	A5%	Z%	KCUkJ/m²
Ø 30	440	275	21	55	1180

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	7.85	205	—	—	—
100	7.83	—	12.2	44	487
200	7.8	—	13	41	—
300	7.76	—	13.3	41	—
400	7.73	—	13.7	39	—
450	—	172	—	—	—
500	7.7	—	14	36	—
600	7.66	—	14.3	34	—
700	—	—	14.5	—	—
800	—	—	13.4	29	—
900	—	—	11.2	29	—
1000	—	—	12.5	—	—

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.

Heat treatment

ASTM A335/

Order not stated by the source

Isothermal annealingTemperature not stated
NormalizingTemperature not stated
Tempering650 °C
Annealing650–705 °C

The source lists these operations without stating an order or an alternation. They are shown unordered on purpose.

GB /T 3077-2015

In this order

Normalizing920 °C
Tempering680–690 °C
Cooling Air

GB /T 5310-2023

In this order

Normalizing900–960 °C
Tempering670–730 °C

ISO 9330-4-2000

In this ordert≤40

Normalizing900–960 °C
Tempering660–730 °C
Cooling Air

Supply condition

Quenching and tempering150＜t≤250
Normalizing and Tempering and Quenching and tempering100＜t≤150
Quenching and Temperingd=30
Normalizing and Tempering
Normalizing and Tempering
Normalizing and Tempering and Quenching100＜t≤150
Normalizing and Temperingt≤16
Quenching and Tempering150＜t≤250
Normalizing and Temperingt≤40

Conditions the standard permits on delivery. No temperature or medium is published for these, so no order and no alternation is implied.

Source: www.caishuku.com

Similar grades — and why

Selection rule, stated so you can disagree with it: same number class 1.7, a shared category, and a published range for Cr / Mn 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.

16CrMo41.7242

Cr 0,90-1,20 · Mn 0,50-0,80