Table 3 Material composition taken from...

Table 3

Material composition taken from spectrographs measured with a scanning electron microscope (SEM) from JEOL JSM-5310 with an Oxford Instruments Xplore 30 X-Ray beam and AZTEC Material Composition Analysis Software

	17-4PH			H-13
Standard name	AISI 630			AISI H13
Description	Hard tool stainless steel			High resistance hot work steel
Material [% in weight]	SEM	ISO 15608:2025	MDS	SEM	ISO 4957:2018	MDS
Fe	73.7	balance	balance	91.0	balance	balance
Cr	16.3	15.0–17.5	15.0–17.5	6.2	4.8–5.3	4.75–5.50
Ni	4.7	3.0–5.0	3.0–5.0	0	0	0
Cu	3.1	3.0–5.0	3.0–5.1	0	0	0
V	0	0	0	1.5	0.8–1.2	0.8–1.2
Si	1.1	1.0 max	0	1.3	0.8–1.2	0.8–1.2
Mn	1.0	1.0 max	1.0 max	0	0.2–0.6	0.2–0.6
Nb + Ta	0	0.15–0.45	0.15–0.45	0	0	0
Mo	0	0.50 max	0	0	1.0–1.3	1.10–1.75
C	na⁽¹⁾	0.07 max	0.07 max	na⁽¹⁾	0.35–0.45	0.32–0.45
P	0	0.04 max	0	0	0	0.03 max
S	0	0.03 max	0	0	0	0.03 max

	17-4PH			H-13
Standard name	AISI 630			AISI H13
Description	Hard tool stainless steel			High resistance hot work steel
Material [% in weight]	SEM	ISO 15608:2025	MDS	SEM	ISO 4957:2018	MDS
Fe	73.7	balance	balance	91.0	balance	balance
Cr	16.3	15.0–17.5	15.0–17.5	6.2	4.8–5.3	4.75–5.50
Ni	4.7	3.0–5.0	3.0–5.0	0	0	0
Cu	3.1	3.0–5.0	3.0–5.1	0	0	0
V	0	0	0	1.5	0.8–1.2	0.8–1.2
Si	1.1	1.0 max	0	1.3	0.8–1.2	0.8–1.2
Mn	1.0	1.0 max	1.0 max	0	0.2–0.6	0.2–0.6
Nb + Ta	0	0.15–0.45	0.15–0.45	0	0	0
Mo	0	0.50 max	0	0	1.0–1.3	1.10–1.75
C	na⁽¹⁾	0.07 max	0.07 max	na⁽¹⁾	0.35–0.45	0.32–0.45
P	0	0.04 max	0	0	0	0.03 max
S	0	0.03 max	0	0	0	0.03 max

Note(s):

na⁽¹⁾ refers to C content not measured in this study

Source(s): Author’s own work. Data compared to ISO (2025) for 17-4PH and ISO (2018) for H-13, as well as equipment supplier material data sheets (MDSs) (BMD Equipment Co., 2026a, 2026b)

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