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Grade X5CrNiCuNb16-4
ISO Numeric Designation 4542-174-00-I
Corresponding Standard ISO 683-18-2014
Heat-Treatable Steels, Alloy Steels and Free-Cutting Steels — Part 18: Bright Steel Products
Classification Precipitation-Hardening Stainless Steel
X5CrNiCuNb16-4 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo More
Minimum Value - - - - - 15 3 3 - Nb：5C~0.45
Maximum Value 0.07 0.7 1.5 0.04 0.03 17 5 5 0.6
X5CrNiCuNb16-4 Mechanical Properties
Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
% 		Hardness
HBW 		Impact Energy Absorption
KV2
J
t≤160 Annealing ≤1200 ≤355
t≤16 Quenching + Tempering (+P800) 900~1100 ≥600 ≥10
16＜t≤40 Quenching + Tempering (+P800) 800~1050 ≥520 ≥12 ≥75
40＜t≤63 Quenching + Tempering (+P800) 800~1000 ≥520 ≥18 ≥75
63＜t≤160 Quenching + Tempering (+P800) 800~950 ≥520 ≥18 ≥75
t≤100 Quenching + Tempering (+P930) 930~1100 ≥720 ≥12 ≥40
t≤100 Quenching + Tempering (+P960) 960~1160 ≥790 ≥10
t≤100 Quenching + Tempering (+P1070) 1070~1270 ≥1000 ≥10
1 Approximate Comparison Table Precipitation Hardening Stainless Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard
GB ISC CNS JIS KS ASTM UNS ISO Numerical Grade DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade
05Cr17Ni4Cu4Nb
(0Cr17Ni4Cu4Nb) 		S51740 630 SUS 630 STS 630 630 S17400 X5CrNiCuNb 16-4
1
(ISO 683-13-1986) 		4542-174-00-I X5CrNiCuNb 17-4 1.4542 Z6CNU 17-04 X5CrNiCuNb 16-4 1.4542
2 Approximate Comparison Table Precipitation Hardening Heat-Resistant Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard
GB ISC CNS JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade
05Cr17Ni4Cu4Nb
(0Cr17Ni4Cu4Nb) 		S51740 630 SUS 630 STS 630 630 S17400 X5CrNiCuNb 16-4 X5CrNiCuNb 17-4 1.4542 Z6CNU 17-04 X5CrNiCuNb 16-4 1.4542
X5CrNiCuNb16-4 Corresponding Standards(Same grade name, different standards)
1 EN 10088-1-2005
X5CrNiCuNb 16-4 1.4542
2 EN 10250-4-1999
X5CrNiCuNb 16-4 1.4542
3 ISO TS 15510-2003
X5CrNiCuNb16-4
4 EN 10088-3-2005
X5CrNiCuNb 16-4 1.4542
5 EN 10088-3-2014
X5CrNiCuNb 16-4 1.4542
6 ISO 15510-2014
X5CrNiCuNb16-4 4542-174-00-I
7 DIN EN 10088-3-2014
X5CrNiCuNb 16-4 1.4542
8 ISO 683-18-2014
X5CrNiCuNb16-4 4542-174-00-I
9 NF EN 10088-2-2005
X5CrNiCuNb16-4 1.4542
10 NF EN 10088-1-2005
X5CrNiCuNb16-4 1.4542

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